Sunny Saturday and Boston

Saturday morning I woke to a clear blue sky, warm sun and the sounds of of NOLA (New Orleans, LA) jazz going down the street outside our flat.  It sounded like a funeral procession.  As the music started to fade I heard what sounded like marchers in protest.  I was very confused.  I race out to my front balcony and see this:

After the jump, the rest of the day