And not all street art in Berlin is spray painted onto walls. The Ampelmännchen (little street light man) was designed in 1961 by an East German traffic psychologist named Karl Peglau.
When the wall fell a lot of Western Berlin's marks took over the East. However, the Ampelmännchen hung on, becoming a cultural icon admired and recognized throughout the world. It has become a symbol of reunification, of embracing signs of an oppressed society and reinventing them as unifying art and acceptance.