I feel unprepared to jump into this thread without looking at the exchanges a little more closely...
But, here goes.
The modern enslavement of Africans by Europeans is, when you look at the historical record, not comparable to, say, Roman slavery or any other known form. It happened on a scale and at a pace unknown before. And, never had slavery had such genocidal tendencies. Look into the history of the slave trade; you'll be shocked to see how many are thought to have died.
Also, based on what I'm seeing in the pic thread, listening to a bunch of white dudes talk about racism is interesting, but most of us should be honest and recognize our own limitations on this topic. I'll never forget my first prolonged exposure to a culture in which I was a visual minority... it totally twisted my head around to different nuances of these issues. Moreover, most of us would laud a lot of the social, structural features that help racism to endure, e.g. politics based on representation.
I don't think the right reaction to PDiddy is to immediately throw his statement onto the dualism of "good"-"bad". For me, the POTENTIAL of Black Power is interesting. Afro-American resistance to the dominant order has, since day one, produced some of the most beautiful and intense music, literature, etc. Is it likely that PDiddy's "revolution" is watered down by corporatist/market mentality? Maybe. But, I'll be looking for differences and their potential.