Personally I think the truth lies somewhere between these two points:
Suarez casually throwing a 'racist' phrase at Evra without any real racist intent - careless but not evil.
Evra being extremely sensitive on this issue and construing some abusive banter from Suarez as racist - understandable but excessive.
I would find it hard to believe that any player who has spent any time at a top team these days can truly be a racist when surrounded by players of all backgrounds who are pretty much equally good at the game as they are.
Evra's background probably makes him more likely to see things as racist - France isn't quite as integrated as the UK which is why they made such a big deal out of the make-up of their WC winning side, as if the striking exception somehow proved that widespread prejudice doesn't exist in France.
Living in the Czech Republic, I see racism all the time. Xenophobia towards their larger neighbours (somewhat understandable, given their history) and outright prejudice against certain minorities is widespread - it's a difficult cycle to break out of, especially when no-one really sees it as a problem.
One encouraging sign was in their playoff games with a player of Ethiopian descent in the team - these are the real things that start to breakdown the stereotypes, when people start to see positive role-models from diverse backgrounds.
Football in the UK has certainly helped with this in my lifetime.
