"white guilt" is stupid. I'm not guilty of slavery. I don't feel personally attacked when I learn more about slavery.
The only people who feel guilty over slavery are the people who know it's wrong and glorify the slavers anyways.
My prevailing attitude about slavery is that slavers should be shot, slavery should be revealed to kids as the brutal and tyrannical evil that it is, and we should commemorate the brave people who gave their lives to destroy the slavocracy. We should eradicate the shameful loophole in the Constitution that permits modern day slavery, and we should not do apologia for the slave trade.
If my ancestors owned slaves, they are bad people who deserve to be reviled for as long as they remain in the historical record.