Since 1998 the Districts of Friedrichshain (former East-Berlin) and Kreuzberg (former West-Berlin) fight against each other in the famous Water & Vegetable Battle on a bridge which divided Berlin back in the days of Cold War.

Due to some inner political changes in Berlin both districts were united but well, their citizens still argue which side is better and rules over the others.

You know, it's no serious struggle but just a fun "demonstration" officially allowed by the city.