I'm posting anon, because yes, I'm a coward and don't want crazed stalkers.
You cannot be racist to a 'white' or 'black' person. White or black is NOT a race.
African American is a race.
Irish is a race.
Jamaican is a race.
French is a race.
The list goes on. White or black are not races, therefore you cannot be racist towards them. Sure you can be discriminatory, but it is NOT racism.