Tags can also be scoped by region and week/year

app/controllers/tags_controller.rb

 # Manage event tags
 class TagsController < InheritedResources::Base
+  has_scope :region, :locality, :tag, :daylimit
+  has_scope :period, type: :hash, using: [:year, :week]
+
   def index
-    @tags = Event
+    @tags = apply_scopes(Event.moderated)
             .pluck(:tags).map(&:split).flatten
             .group_by { |i| i }
             .map { |k, v| [k, v.size] }
@@ -15,7 +18,7 @@ class TagsController < InheritedResources::Base
   end
 
   def show
-    @events_future = Event.moderated.future.tag params[:id]
-    @events_past = Event.moderated.past.tag params[:id]
+    @events_future = apply_scopes(Event).moderated.future.tag params[:id]
+    @events_past = apply_scopes(Event).moderated.past.tag params[:id]
   end
 end