Dude the best anime ever is Ashita no Joe.
Its so cool.
He believes in freedom. When he gets arrested for helping out orphan kids and people making him out to be a bad guy when he's not, he even punches and kicks police officers in a court room (for the record, that is not something I would ever do by the way,) and gets sent to jail then prison then solitary confinement. Then he learns to box there and becomes a super cool boxer. Then he fights with all of his heart and soul until he becomes nothing but white ash..