The Balotelli stuff is made up, he's not been racially abused. Seedorf said in the post match interview he was frustrated at his performance and substitution.
Not to say it's not happened before and and will not happen again because it almost certainly will, but its ridiculous that a false story can spread as fact through social media.
http://www.football-italia.net/44993/racism-not-behind-balotelli-tears