You could very well be right about King but this piece provides no evidence of Robinson's accusations, nor yours.  I will add this, if you really believe King is a racist then you should write/talk about him all the time, just provide the evidence so those who don't know him can make a judgement for themselves without relying on a testimonial.  But, your testimonial (credibility) is important, I value your opinion so my antenna is up regarding King.