No. of Recommendations: 2
As Hitchens used to say, and I paraphrase, just because you put "reverend" in front of somebody's name doesn't mean they know anything.
Two of the three you name are in that situation. The third is -probably- a psychopath that really doesn't know anything. I expect Wharton Business School is embarrassed to have granted him a degree.
Sharpton may have good intentions, but I've seen him speak and debate, and he's not really the sharpest knife in the drawer. Jackson is a better speaker, and has some interesting ideas. But I preferred him when he was a motivational speaker. "I am...somebody!" I remember that. It was a good message.
