Oh come on, they are quite rare in the US as well, and the US is a LOT larger than Germany.
Yes, if "a LOT larger" means 3.5x larger. Germany has 82 million inhabitants and is the most populous country in Europe.
For example, a beating in California isn't going to be as troubling to a resident in Vermont. They'll simply say "different state, different police force". On the other hand, a beating in Berlin is going to trouble someone in any part of Germany.