royfromaus,
I can't believe you find the fans behaviour is somehow a moot point. So even though footballers KNOW thye will get abuse they are supposed to just stand there and take it, even when violence may be offered?
Take a look at the advert halfway down this link, then tell me it's acceptable:
http://strettynews.com/racism-footballs-final-foul/
How would you react if someone came to your place of work, approached you in an aggressive manner and started effing and blinding at you? Telling you to "F*** off back to (wherever you're from)" and calling you a motherjefffer?
I know exactly how I'd react and it's exactly the same way as Cantona did.