

Obelix, in case you have been involved in the occupation of the university that time, it is likely that you have been filmed by the police. If this is true, your chances are pretty low. Even when you behaved non-violent. There is a saying in German: mitgehangen, mitgefangen - it is like you would be a wolf in a pack and although you would stay outside the fence and not participate in the killing of sheep, you are done anyway.
Therefore my suggestion: if you are a foreigner and the police gives a final call to leave the place, follow the order of the police. Otherwise another saying applies: Dummheit schützt vor Strafe nicht (ignorance is no excuse).
BTW, the situation will get way darker when the AfD will be in power, and what the CDU has done until now, I have to admit that it does not look good for many people.
I assume the biggest problem is that the people are taught for centuries to follow their leaders instead of thinking for themselves and acting accordingly. It is the mentality of the general Russian society I would say. A larger Russian population could for sure bring down the government and end the war by an instant, yet this remains sadly as it is, utopia.