That fellow is high on drugs. Even if you break his arm, he wouldn't feel a thing.
In the old days, the mata would whack you till your face swollen, nose and jaw broken, even lose a tooth or two and maybe some broken bones. But now, a slide bruise will get you on the news and the policemen who bruise him will get suspended, charged or fired.
So what to do? Only get more officers to overpower him to not let him move without hurting him too much.