It's about fucking time. That piece of shit should have been killed long ago. As for the douchebags that are whining about racism, what exactly is racist about executing a convicted quadruple murderer? The fact that he is black? Sorry that is not cutting it. The real racists are those that say its wrong to execute him because he is black. What could possibly be more racist than that?
As for those celebrities that have come out in favor of clemency or are denying his guilt, hopefully they will be judged in the court of karma and get what they deserve.
Bottom line: Good fucking riddance to a murdering piece of shit.