You "imagine" or you have evidence? It's easy to "imagine" situations that support any point of view. "I imagine that aliens used to use mind control rays on people before 1968 to prevent them from wanting premarital sex." See how easy it is? It's also entirely worthless as an argument.
Look around you at the black people living in America today. The vast majority have some "white" features. Why do you think that is?
If you think that white slaveowners and their male friends and family weren't enjoying their female slaves, you're hopelessly naive.