"Coons," "Toms," "sellouts" are simply ignorant of themselves, their history and the impact of what they do. I believe when they are educated, then they change. They "do better, when they know better." However, when you deliberately do things that cast yourself, or your people in terrible light--especially before the majority who definitely has no true understanding of your background and culture--and do so in the name of the almighty dollar,, trying to justify it through ratings, "harmlessness," "it's what the public wants," etc. I think you're "cooning," you're "selling out".
http://blacksnob.blogspot.com/2008/05/sell-out.html