fight back. I would like to tell you what happened with my son when he was 8 years old. once one boy tried to hit my son with his bicyle, because I have been keeping an eye on my son when he played outside, I approached that boy silencly, the boy was scared trying to fleed. I hold his bicyle asking him what he was doing, the boy sure lied to me, so I kicked his bike and he felt down, meanwhile I told my son to kick his ass and told him not to bully again. since then that boy didn't bug my son anymore.