People riding their bikes calling for their dogs to catch up, cross the street, the dogs running after them, and unleashed in stores. People openly drinking beer on the subway not because they are alcoholics but as a norm. Graffiti everywhere to the point that it is a fabric of the city, is appropriated by advertising companies.
Reunified Berlin is relatively young. It is in a lot of debt. It is a good city to see how a city's citizens oppose gentrification (and sometimes even succeed). This must be what New York was like 20 years ago, but the big G has taken over that!