Not sure if relevant, but I was once so drunk policemen came, took me to the forest and beat me up with batons. I probably deserved it. It hurted for more than a month, but I had no visible injuries, which goes against theory I heard about baton beatings.
>I'm not sure how that is even allowed.
In most parts of the world policeman can come to anyone and demand his ID card without reason. Nothing strange about your story