There are short-term solutions to problems and long-term solutions. The short-term solution may be to fight back in certain scenarios. But long-term, strengthening the family as a unit in society is the only cure for these type of societal problems. Good parents can raise good kids. I'm not saying that if a kid is bad or a bully, that means the parents are necessarily bad, but the correlation between good parents and good kids is undeniable. Society should put more effort into defining what good parenting is (not through law, but rather through custom) than helping kids learn how to fight back. Both may be necessary efforts, but one will have further-reaching impact.