Precisely. He thinks he shouldn't have walked off. So do I.
It was a small section of the crowd, and at the end of the day, its words. Get on with it, let the referee know, and then let the police deal with it afterwards.
Racism is of course wrong, but it doesn't give people the right to act unprofessionaly or with violence- as some people seem to think it does. It will get sorted out when the victims stop reacting to it. Its what racists want. As I said, let the referee know, he'll put it in his report and then if its serious the police can get involved.
I bet Boateng wouldn't have walked off if it had have been homophobic abuse put it that way.
That certainly worked with women's rights. And slavery. And racial segregation in America. OH WAIT !
They let the police 'sort it out', and next time there will just be another group there doing the same thing. The police can't just arrest dozens of people, they'd have no real proof who was and wasn't involved in a crowd situation. It may be different at a game with cameras watching every section of the crowd, but even then people get away with murder at football grounds.