If that is just a group of Germans out enjoying themselves then why have they left all the woman at home? There are no women in that video as far as I can see. They are Muslim men. Why are the police in riot gear? If you think you will ever get the truth from a senior policeman or a police spokesperson then you are very naive. These are political people. You would be better off asking an ordinary policeman what happened. But they could only give you a private response. If they went public they would be sacked or worse.