Actually, having traveled a lot I have come to appreciate bavarian cops (and northern/central european cops in general) as being professional and downright civil when compared to some of their southern European counterparts (say from Spain, Italy or France). I've noticed, though, that it always helps to have at least some knowledge of the local language.

There are always A-holes around in the police but consistently getting the frisky treatment would make me wonder if something in my appearance could be seen as cop-bait. Maybe the dreads and the weed silhouette on your cap? Just kidding, but since we don't know what you looked like, it's hard to tell if what happened to you was plain bad luck or something in your looks and/or expressed attitude. Definitely not something that happens to everyone.