Madman?

Since a few weeks some kind of madman is giving free concerts from his balcony not far from my room. He is listening to loud music and singing or rather screaming along with it. It's really weird. Sometimes a cop or a neighbour tells him to stop, but he doesn't seem to mind them. First I thought he was drunk but my roommate says something else must be wrong with him...
It makes me wonder how society should approach these kind of people. Would this guy be better off some place where they take care of him? Or not?