Why is it ok for an african american to call me white, but im called a bigot if i call them black, im italian?

I thinks its sick how if I say "black" im branded a racist, but if i'm called white its ok?I feel african americans pull the race card waaayyy to much, and it really makes me mad when african americans say my ancestors used thier's as slaves and we should pay for the work my ancestors had theirs do. First off my ancestors were in italy and had nothing to do with slavery; and second I bet more than half of african americans couldn't trace their actual ancestry more than 75 years. I feel most just ume that they were slaves. I'm not sorry if I offend anyone but if you were to think about it hard enough and long enough instead of saying i'm a racist or a bigot, i'm sure you'll realize how true my words are.