A PSA for anyone who has ever said, "Not to be racist, but..."

The third trailer for "Dear White People," a racial satire that premiered at Sundance, comes in the form of a funny PSA starring Marque Richardson. Per Richardson -- don't ever say "Not to be racist, but..." because it's already racist. But if you do, here's what to say next.

"Dear White People" opens in theaters October 17.