You're thinking in terms of group guilt and inter generational guilt, which frankly doesn't make sense. There is no rational basis to trace ancestry of people to find who descended from slaves or slave owners. It's non sensical. In a fair hiring environment, no one deserves any special preference. If you want to help economically poor groups, the time to intervene is much earlier in their childhood by providing them better education, communities, infrastructure etc. So tipping the scales by investing more in certain communities is alright, tipping them at the job interview isn't.