It's not just a crack on the wall. "Find the cracks and exploit the discoveries to be revealed there . then move on to practice running headlong into the brick walls. Cracks crack first. Heads crack before brick walls. (from: STREET ART UTOPIA)"
I'm really enjoying the street art and paintings of Brazilian artist DMS (Davi De Melo Santos) whose work I find to be humorous, hopeful, and extremely inventive. Go get lost in his paintings, murals, and this fun series of faces.