That street art persists in Chicago is a sort of miracle. This is a city with a two-decade-old ban on spray paint, a town in which the Department of Streets and Sanitation will spend nearly $5 million in 2014 to dispatch two-dozen crews every day to paint over or blast pressurized water at pieces. As of the middle of June, Streets and San had removed more than 60,000 works this year. On top of that, Mayor Emanuel is pushing a plan to double the graffiti fine, from $750 to at least $1,500.