I'm not saying that attacks should be based on rumor, but if there is evidence that is ignored by our justice system, but is plain as day to all who saw it that the person is guilty, I think a vigilante can solve problems that the police sometimes just can't. Say a pedophile is arrested and imprisoned after trial, but is let out after a few months, only to harm another child. The law system would just throw them in jail again for a few months, maybe a year, but the cycle would continue unless he is A. Jailed permanently or B. "Taken care of" by a vigilante