Well there is a big distinction between saying it in comedic effect on a forum dedicated for humour (a.k.a. wibbles) and saying "u stupid niqqer" to someone. Level of enforcement for such rule usually comes down to context. And that's not to say that someone who makes racist jokes all the time wouldn't eventually get banned.

Either way, the point is: don't expect Toribash to be a communist community, the level of enforcement at the moment is just fine, everyone who is genuinely racist do get banned.