how i would take the approach is just discuss with the person how their racism makes you feel...there's a difference between being racist and ignorant...i know what it's like because at one point i was ignorant...i grew up in a racist environment, with little to no other races involved...then one day i moved to the city.

i ended up with a puerto rican roomate with a child by a black man...one night we were getting drunk and started talking about racism...after half a bottle she pointed out that i wasn't racist, i was ignorant...my opinions on other races was based on other peoples opinions...by the summer time some of my best friends were hispanic and black...

it's a matter if you want the friendship or not...if you don't feel they are a person you could continue being with or not...it's up to you, but why are the racist?