Alcohol has a strange effect on a minority of people. I know someone who I would happily trust with a daughter if I had one. Then one night we went out and got legless. One moment he was fine and the next a big transformation. He became extreemly agressive towards complete strangers. Even trying to pick a fight with people who were just passing by on the other side of the road and didn't even see him coming.
The strange thing was he appeared to be in a good mood all the time he was being agressive. It's hard to convey how dramatic and strange the change was. Real life Jeckle and Hide stuff. I'm convinced he has no idea that he has this "problem" or that his behavoiur that night was in any way unacceptable.
How should society deal with someone like him?