I agree, its does set a horrible example, but sport is not ready to be the moral guardian of society, thats up to the government and the courts and the people who enforce societies rules
if i called someone from that community the same thing in front of a policeman then most likley nothing would happen to me, if i commented on the colour of the skin id probably get arrested, thats just a fact of life, i am not saying you shouldnt be upset, it just needs to contextualised with the general feeling with the wider community
I have a much bigger problem with someone trying to stick fingers in someones eyes, or trying to bite people on a sports ground etc lets tackle those first