A black guy approches another black guy and says 'sup nigger. They bump knuckles and go on their ways. A white guy does it, gets his as beat and is convicted of a hate crime.

A woman (any race) tells her coworker Shut up bitch and they laugh. A white guy says the same thing and is fired for sexual discrimination.

A gay guy calls another gay guy faggot and they are flirting. A straight white guy says that and he's labeled homophobic. 

Where's the real discrimination?

An arab has sex with child, he's faithful to Allah
A white guy does it and he's a rapist.