By saying “aren’t most white people racist”, aren’t you making a racist statement yourself, based on precious little evidence? For starters, recent work on skeletal remains dating back between 30-100,000 years shows that there is little to no genetic difference in the various ‘races’ world-wide, but there are ethnic differences, one investigation has shown that remains found in a cave system in Somerset, England, dating back roughly 30,000 years, had very dark skin, what would be classed as black now, but he had blue eyes.
Also, pretty much every ethnic group displays this sort of behaviour towards other ethnic groups; people from the Indian sub-continent are frequently hostile towards family members having relationships with people from other ethnic groups, and I know of this attitude affecting an acquaintance of mine, she was disowned by her family for wishing to marry a white guy. Look up the term ‘honour-killings’ sometime, see how extreme this attitude can go.