What Behavior Is Being Addressed With This Sign?

Sign saying "Please BE QUIET AND USE TRASH CANS
Our Neighbors Will Appreciate It..."

My daughter sent me this photo from California and provided no context at all.  Thus, I can let my imagination run wild in regard to what was being addressed.  Do you get half credit if you use the trash cans but do it loudly?

As we draw near to the Fifth Sunday of Lent, how have you responded to the Ash Wednesday invitation to “Repent, and believe in the Gospel”?  Were those ashes placed on your forehead a clear enough sign that you are dust and unto dust you shall return?  Be a faithful follower of Christ.  Your neighbors will apreciate it whether they realize it or not.​