If it was up to me he'd of been banned years ago. As you say, he is a bad role model. There is no need for that type of consistent behaviour in the game.
All players make the odd bad tackle accidentally, but with Barton, it's practically every game, and you can't tell me that he goes into tackles thinking he'll get the ball.
I was listening to the game on LFCTV, so I've not seen the tackle itself yet, but Davey Fairclough was calling it an assault on Xabi.
He should be done for ABH and go back to jail