A graffiti writer in Brooklyn offers up some advice to fellow vandals and New Yorkers in general from a Williamsburg rooftop. I see this every morning while Im waiting for the M train at the Marcy stop in Williamsburg, and each and everytime, it reminds me to keep on pushing. Graffiti is a really funny thing. People either complain about it, or embrace it and when it is a inspiring quote or touching picture, it can mean so much more.