IC racism is allowed. You may RP your character to have any view/opinion that you wish, however racist or rude it may be!
Although, in this situation, seeing as your character isn't black, you could question if the other player was fucking around OOCly (I wouldn't know, having not been there)? If this is the case and he was generally trolling about, you may wish to make a complaint
here!
If there is any other way, I, an
administrator or a
helper could help you, do not hesitate to PM anybody with your questions, or post them here.