diff --git a/src/app/components/article-service/article.service.js b/src/app/components/article-service/article.service.js
index 2130389..302ce68 100644
--- a/src/app/components/article-service/article.service.js
+++ b/src/app/components/article-service/article.service.js
@@ -100,21 +100,17 @@
 
       // var url = service.apiArticles + API.articleId.home;
 
-      // var paramsExtended = angular.extend({
-      //   // 'fields[]': ['id', 'title', 'slug', 'abstract', 'categories', 'setting', 'children', 'children_count'],
-      //   'content_type':'ProposalsDiscussionPlugin::Proposal'
-      // }, params);
-
       // UtilService.get(url, {params: paramsExtended}).then(function(data){
       //   cbSuccess(data);
       // }).catch(function(error){
       //   cbError(error);
       // });
 
-      //
-      searchProposals({
+      var paramsExtended = angular.extend({
         query: ''
-      }, cbSuccess, cbError);
+      }, params);
+
+      searchProposals(paramsExtended, cbSuccess, cbError);
     }
 
     function getProposalById (proposalId, params, cbSuccess, cbError) {
diff --git a/src/app/components/category-list/category-list.directive.js b/src/app/components/category-list/category-list.directive.js
index c35ab8a..4622663 100644
--- a/src/app/components/category-list/category-list.directive.js
+++ b/src/app/components/category-list/category-list.directive.js
@@ -30,6 +30,12 @@
       if(!vm.isCollapsed){
         vm.isCollapsed = false;
       }
+
+      if(angular.isUndefined(vm.canUnselect) || vm.canUnselect === null){
+        vm.canUnselect = true;
+      } else {
+        vm.canUnselect = !(vm.canUnselect == 'false');
+      }
     };
 
     CategoryListController.prototype.selectCategory = function(category, $event) {
@@ -38,11 +44,13 @@
       // prevent glitch
       $event.stopPropagation();
 
+      if(!category && !vm.canUnselect){
+        vm.$log.info('Unselect is disabled.');
+        return;
+      }
+
       if (category !== vm.selectedCategory) {
-        // selected new filter
         vm.selectedCategory = category;
-      } else {
-        vm.selectedCategory = null;
       }
 
       // send event to all controllers
@@ -65,7 +73,8 @@
       templateUrl: 'app/components/category-list/category-list.html',
       scope: {
         categories: '=',
-        selectedCategory: '='
+        selectedCategory: '=',
+        canUnselect: '@'
       },
       controller: CategoryListController,
       controllerAs: 'vm',
diff --git a/src/app/components/dialoga-service/dialoga.service.js b/src/app/components/dialoga-service/dialoga.service.js
index 8196c34..95bc680 100644
--- a/src/app/components/dialoga-service/dialoga.service.js
+++ b/src/app/components/dialoga-service/dialoga.service.js
@@ -19,6 +19,7 @@
     extendedService.getThemeBySlug = getThemeBySlug;
     extendedService.getPrograms = getPrograms;
     extendedService.getProgramBySlug = getProgramBySlug;
+    extendedService.getProgramsByThemeId = getProgramsByThemeId;
     extendedService.getProgramsRandom = getProgramsRandom;
     extendedService.getEvents = getEvents; // override
     extendedService.getQuestions = getQuestions;
@@ -89,6 +90,7 @@
         },cbError);
       }
     }
+
     function getThemeBySlug (slug, cbSuccess, cbError) {
       if( !!CACHE.themes ){
         _getThemeBySlug(CACHE.themes);
@@ -146,6 +148,28 @@
       }
     }
 
+    function getProgramsByThemeId (themeId, cbSuccess, cbError) {
+
+      if( !CACHE.programs ){
+        getPrograms(_getProgramsByThemeId, cbError);
+      } else {
+       _getProgramsByThemeId();
+      }
+
+      function _getProgramsByThemeId(){
+        var result = CACHE.programs.filter(function filterProgramBySlug (program) {
+          var category = program.categories[0];
+
+          if(angular.equals(category.id, themeId)) {
+            return true;
+          }
+          return false;
+        });
+
+        cbSuccess(result);
+      }
+    }
+
     // Ex.: /api/v1/dialoga_plugin/random_topics/103358
     // TODO: get endpoint for production
     // TODO: put at cache?
diff --git a/src/app/components/topics-select/topics-select.directive.js b/src/app/components/topics-select/topics-select.directive.js
new file mode 100644
index 0000000..7000ac8
--- /dev/null
+++ b/src/app/components/topics-select/topics-select.directive.js
@@ -0,0 +1,61 @@
+(function() {
+  'use strict';
+
+  angular
+    .module('dialoga')
+    .directive('topicsSelect', topicsSelect);
+
+  /** @ngInject */
+  function topicsSelect() {
+
+    /** @ngInject */
+    function TopicsSelectController($rootScope, $log) {
+      $log.debug('TopicsSelectController');
+
+      // alias
+      var vm = this;
+
+      // dependencies
+      vm.$rootScope = $rootScope;
+      vm.$log = $log;
+
+      // initialization
+      vm.init();
+    }
+
+    TopicsSelectController.prototype.init = function() {
+      var vm = this;
+
+      // vm.topics = null;
+      // vm.selectedTopic = null;
+      vm.topicFilter = vm.selectedTopic;
+    };
+
+    TopicsSelectController.prototype.selectTopic = function() {
+      var vm = this;
+
+      if (vm.topicFilter === null) {
+        vm.$log.debug('Default topic selected.');
+        return;
+      }
+
+      // send event to all controllers
+      vm.$rootScope.$broadcast('change-selectedTopic', vm.topicFilter);
+    };
+
+    var directive = {
+      restrict: 'E',
+      templateUrl: 'app/components/topics-select/topics-select.html',
+      scope: {
+        topics: '=',
+        selectedTopic: '='
+      },
+      controller: TopicsSelectController,
+      controllerAs: 'vm',
+      bindToController: true
+    };
+
+    return directive;
+  }
+
+})();
diff --git a/src/app/components/topics-select/topics-select.html b/src/app/components/topics-select/topics-select.html
new file mode 100644
index 0000000..ae804dd
--- /dev/null
+++ b/src/app/components/topics-select/topics-select.html
@@ -0,0 +1,9 @@
+<div class="topics-dropdown">
+  <select
+    ng-model="vm.topicFilter"
+    ng-change="vm.selectTopic()"
+    ng-options="topic.title for topic in vm.topics track by topic.slug"
+    class="form-control">
+    <option value="">-- Selecione um programa --</option>
+  </select>
+</div>
diff --git a/src/app/pages/propostas/propostas.controller.js b/src/app/pages/propostas/propostas.controller.js
index c98a8c0..c8a3288 100644
--- a/src/app/pages/propostas/propostas.controller.js
+++ b/src/app/pages/propostas/propostas.controller.js
@@ -22,7 +22,7 @@
 
     vm.init();
     vm.loadData();
-    vm.attachListeners();
+    // vm.attachListeners(); // attach listeners after load data (SYNC)
 
     $log.debug('PropostasPageController');
   }
@@ -32,6 +32,8 @@
 
     vm.themes = null;
     vm.selectedTheme = null;
+    vm.filtredPrograms = null;
+    vm.selectedProgram = null;
     vm.proposals = null;
     vm.filtredProposals = null;
     vm.query = null;
@@ -46,30 +48,108 @@
 
     vm.loading = true;
 
-    // load Proposals
-    vm.loadingProposals = true;
-    vm.DialogaService.getProposals({}, function(data){
-      vm.proposals = data.articles;
-      vm.filtredProposals = vm.proposals;
-      vm.loadingProposals = false;
+    // Behaviour:
+    // 1. Load themes
+    // 2. Select a Random Theme (T)
+    // 3. Load programs of T
+    // 4. Select a random program of T
+    // 5. Filter the list of proposals
+    // END.
+
+    // 1. Load themes
+    vm.loadingThemes = true;
+    vm.DialogaService.getThemes(function(themes){
+      vm.themes = themes;
+      vm.loadingThemes = false;
       vm.loading = false;
+
+      // 2. Select a Random Theme (T)
+      var selectedTheme = null;
+      if(vm.search.tema){
+
+        // vanilla filter
+        var results = vm.themes.filter(function(t){
+          return t.slug === vm.search.tema;
+        });
+
+        if(results && results.length > 0){
+          selectedTheme = results[0];
+          vm.selectedTheme = selectedTheme;
+        }
+      }
+
+      if(!selectedTheme){
+        vm.selectedTheme = vm.themes[Math.floor(Math.random() * vm.themes.length)];
+      }
+
+      // 3. Load programs of T
+      // (AND 4)
+      var themeId = vm.selectedTheme.id;
+      vm.loadPrograms(themeId, function(){
+        vm.loadProposals();
+      });
     }, function (error) {
       vm.error = error;
       vm.$log.error(error);
-      vm.loadingProposals = false;
+      vm.loadingThemes = false;
       vm.loading = false;
     });
+  };
 
-    // load themes
-    vm.loadingThemes = true;
-    vm.DialogaService.getThemes(function(themes){
-      vm.themes = themes;
-      vm.loadingThemes = false;
+  PropostasPageController.prototype.loadPrograms = function (themeId, cb) {
+    var vm = this;
+
+    vm.DialogaService.getProgramsByThemeId(themeId, function (programs){
+      vm.$log.debug('programs', programs);
+
+      vm.filtredPrograms = programs;
+
+      // 4. Select a random program of T
+      var selectedProgram = null;
+      if(vm.search.programa){
+
+        // vanilla filter
+        var results = vm.filtredPrograms.filter(function(p){
+          return p.slug === vm.search.programa;
+        });
+
+        if(results && results.length > 0){
+          selectedProgram = results[0];
+          vm.selectedProgram = selectedProgram;
+        }
+      }
+
+      if(!selectedProgram){
+        vm.selectedProgram = vm.filtredPrograms[Math.floor(Math.random() * vm.filtredPrograms.length)];
+      }
+
+      if(cb){
+        cb();
+      }
+    }, function(error){
+      vm.$log.error(error);
+      if(cb){
+        cb();
+      }
+    });
+  };
+
+  PropostasPageController.prototype.loadProposals = function () {
+    var vm = this;
+
+    // load Proposals
+    vm.loadingProposals = true;
+    vm.DialogaService.getProposals({}, function(data){
+      vm.proposals = data.articles;
+      vm.filtredProposals = vm.proposals;
+      vm.loadingProposals = false;
       vm.loading = false;
+
+      vm.attachListeners();
     }, function (error) {
       vm.error = error;
       vm.$log.error(error);
-      vm.loadingThemes = false;
+      vm.loadingProposals = false;
       vm.loading = false;
     });
   };
@@ -81,12 +161,23 @@
       vm.selectedTheme = selectedCategory;
     });
 
-    vm.$scope.$watch('pagePropostas.selectedTheme', function(newValue/*, oldValue*/) {
+    vm.$scope.$watch('pagePropostas.selectedTheme', function(newValue, oldValue) {
       vm.search.tema = newValue ? newValue.slug : null;
       vm.$location.search('tema', vm.search.tema);
       vm.filtredProposals = vm.getFiltredProposals();
     });
 
+    vm.$scope.$on('change-selectedTopic', function (event, selectedTopic) {
+      vm.selectedProgram = selectedTopic;
+      vm.$log.debug('change-selectedTopic', selectedTopic);
+    });
+
+    vm.$scope.$watch('pagePropostas.selectedProgram', function(newValue, oldValue) {
+      vm.search.programa = newValue ? newValue.slug : null;
+      vm.$location.search('programa', vm.search.programa);
+      vm.filtredProposals = vm.getFiltredProposals();
+    });
+
     vm.$scope.$watch('pagePropostas.query', function(newValue/*, oldValue*/) {
       vm.search.filtro = newValue ? newValue : null;
       vm.$location.search('filtro', vm.search.filtro);
@@ -94,22 +185,22 @@
     });
   };
 
-  PropostasPageController.prototype.filter = function() {
-    var vm = this;
+  // PropostasPageController.prototype.filter = function() {
+  //   var vm = this;
 
-    if (vm.search && vm.search.tema) {
-      var slug = vm.search.tema;
-      vm.$log.debug('filter by theme', slug);
+  //   if (vm.search && vm.search.tema) {
+  //     var slug = vm.search.tema;
+  //     vm.$log.debug('filter by theme', slug);
 
-      vm.DialogaService.getThemeBySlug(slug, function(theme){
-        vm.selectedTheme = theme;
-        vm.$log.debug('getThemeBySlug.slug', slug);
-        vm.$log.debug('getThemeBySlug.selectedTheme', theme);
-      }, function(error){
-        vm.$log.error('Error when try to "getThemeBySlug"', error);
-      });
-    }
-  };
+  //     vm.DialogaService.getThemeBySlug(slug, function(theme){
+  //       vm.selectedTheme = theme;
+  //       vm.$log.debug('getThemeBySlug.slug', slug);
+  //       vm.$log.debug('getThemeBySlug.selectedTheme', theme);
+  //     }, function(error){
+  //       vm.$log.error('Error when try to "getThemeBySlug"', error);
+  //     });
+  //   }
+  // };
 
   PropostasPageController.prototype.showAllPrograms = function($event) {
     var vm = this;
@@ -141,6 +232,7 @@
     var output = input;
     var query = vm.query;
     var selectedTheme = vm.selectedTheme;
+    var selectedProgram = vm.selectedProgram;
 
     var filter = vm.$filter('filter');
 
@@ -148,6 +240,10 @@
       output = _filterByCategory(output, selectedTheme);
     }
 
+    if (selectedProgram) {
+      output = _filterByProgram(output, selectedProgram);
+    }
+
     if (query) {
       output = filter(output, query, false);
     }
@@ -178,4 +274,23 @@
     return out;
   }
 
+  function _filterByProgram (input, program) {
+    input = input || [];
+
+    if (!program) {
+      // no filter
+      return input;
+    }
+
+    var out = [];
+    for (var i = 0; i < input.length; i++) {
+      var proposal = input[i];
+      if (proposal.parent.id === program.id) {
+        out.push(proposal);
+      }
+    }
+
+    return out;
+  }
+
 })();
diff --git a/src/app/pages/propostas/propostas.scss b/src/app/pages/propostas/propostas.scss
index 3afbb28..200015f 100644
--- a/src/app/pages/propostas/propostas.scss
+++ b/src/app/pages/propostas/propostas.scss
@@ -2,4 +2,8 @@
     .proposal-box--middle {
         background-color: #fff;
     }
+
+    .topics-select--wrapper {
+        margin: 20px 0;
+    }
 }
diff --git a/src/app/pages/propostas/ranking.html b/src/app/pages/propostas/ranking.html
index a299197..4722817 100644
--- a/src/app/pages/propostas/ranking.html
+++ b/src/app/pages/propostas/ranking.html
@@ -38,7 +38,10 @@
 						</div>
 					</div>
 					<div ng-if="pagePropostas.themes">
-						<category-list categories="pagePropostas.themes" selected-category="pagePropostas.selectedTheme"></category-list>
+						<category-list categories="pagePropostas.themes" selected-category="pagePropostas.selectedTheme" can-unselect="false"></category-list>
+					</div>
+					<div ng-if="pagePropostas.filtredPrograms" class="topics-select--wrapper">
+						<topics-select topics="pagePropostas.filtredPrograms" selected-topic="pagePropostas.selectedProgram"></topics-select>
 					</div>
 					<div ng-if="!pagePropostas.themes && pagePropostas.loadingThemes">
 						<div class="alert alert-info" role="alert">
--
libgit2 0.21.2