“Local businesses and even local authorities hired artists to paint murals on the fronts of their buildings. Most famously, on a wall in Kreuzberg, the artist Blu painted two men trying to rip each other’s masks off — symbolizing, he claims, Berlin’s struggles during its first few years of reunification.”
Notice that one guy’s fingers make an E while the other makes a W for east and west.
The figure with the chains and the expensive watches is a commentary on modern life by a different artist I think. I didn’t find anything more about him yet.