Well, I had problems with bullies in my past, too. As long as they only attack you with words its fine for me, thats something you can ignore, just words of some sad *****. But if they attack you physically, this is something you cant ignore, if someone becomes a threat to your own health you have to use force until they arent a threat anymore, thats common sense. Talk, run away, ignore them...just words from people which probably never were in such situations. Sometimes I think people nowadays lost their self preservation instinct.