Agree with Roberts on this one, and fair play if he thinks not enough is done.
I watched the Clarke Carlisle documentary on BBC3 a while back too and John Barnes' comments about being sacked from Tranmere because he was black were incredibly irritating and frankly stupid. He won like 3 in 14 games or something and was sacked. Didn't the players refer to him and McAteer as 'Dumb and Dumber' too? He's a piss-poor manager whether he's black, white, yellow or fucking purple.
I think it's going to get to the point where someone will actually die of a racially motivated attack, whether it's a player or a fan, before they start to take things seriously.