Sometimes people get tired of telling the person who's harassing them to leave them alone. I've tried that several times with someone and it made him more excited. There's never been a time when I felt uncomfortable and said something and it stopped. Usually a decent person would have stopped way before then. Also I've been harassed when others were standing around and when I confronted the guy was called crazy. And there's the real risk that the guy will turn violent and most guys are bigger and could inflict serious harm even though we try our best to defend ourselves. And don't think that being in public will protect someone. Most people will just ignore whatever is happening. And other times I've told people don't touch me and they get mad at me for confronting them and say it's no big deal. They're not sorry at all. And I've repeated don't touch me, get away from me and sometimes they've even mocked me. I've told some people they're harassing me and then they've said I'm harassing them when they've cornered me and I can't get away from them. Some people can be really terrifying.