diff --git a/app/activity.rb b/app/activity.rb
index 84a9e60c..ea943ba3 100644
--- a/app/activity.rb
+++ b/app/activity.rb
@@ -1,6 +1,14 @@
 get '/activity' do
   #expires 7200, :public, :must_revalidate if self.class.production? # 2 hours
   params[:activity] = 'global' # FIXME this is a bad hack
-  @events = Event.global_dataset.all
+
+  global_dataset = Event.global_dataset
+
+  if params[:event_id]
+    global_dataset.where! Sequel.qualify(:events, :id) => params[:event_id]
+  end
+
+  @events = global_dataset.all
+
   erb :'activity'
 end