frank,
No apologies needed. That was one of the best posts that I've seen written on the topic.
I watched the thing on BBC3 tonight and became angry. Not because of the topic but because it manipulated the arguments to suit its own purposes. A great proportion of the time was devoted to the Suarez issue. It never once asked if the FA procedures were correct or if the adjudication was fair. By implication it reinforced that Suarez was racist. Given that it was presented by the Chairman of the PFA, it never questioned what either he or the union had done their duty to the player over the whole issue. In fact Carlisle's own statements at the time added to the the pressure on the FA to find him guilty!
As you say, all of us have prejudices of one type or another. It is how we learn to manage them that is the important issue. Perhaps we should re-focus the law so that it only concerns itself with the extremists and leaves society itself to manage via dialogue what is and is not acceptable.