The counterculture tradition especially of Kreuzberg led to a plurality of votes for the Green Party, which is unique among all Berlin boroughs. The local MPHans-Christian Ströbele is the only Green politician directly elected to the federal Bundestag. While Kreuzberg is characterised by a high number of immigrants, the share of non-German citizens in Friedrichshain is much lower and the average age is higher. The merger between the distinct quarters is celebrated by an annual anarchic "vegetable fight" on the Oberbaumbrücke. Both parts have to deal with the consequences of gentrification.