In answer to this question raised in another thread:
In this particular case, however, it’s appropriate.
SeniorCitizen007 was banned for being unable to stop talking about Muslims. It wasn’t the religion per se, it was the idea that Muslim people were somehow persecuting him and actively acting against his interests. The threads are linked in the Banning notice I linked to above if you want to see the samples. Racism is the appropriate word here.