Especially if HIllary armtwists the superdelegates into nominating her, “once again, denying the black man his chance.”
Hillary is the nominee. All Obama is supposed to be is window dressing. By having a massive nation wide riot when she is anointed the candidate, it will make many vote for her who wouldn't other wise.
There is a few blogs I lurk at that talk about this, and one guy has been saying it for over a year.