I see no reason why black people should be embarassed by these stereotypes. I do see a very good reason why white folks should be. Some things are better left in the past.
Of course the shame belongs to white people. But a lotta white people cannot help but try to heap their shame on other people, keeping them 'in their place' and reminding them, as constantly as possible that they used to be considered property, not people. And treated as such.It's a tactic that a lot of abusers use. Constantly reminding a victim of pain inflicted in the past. It might be only echoes and distant memories but it still hurts.