It makes no difference whatsoever in my opinion of Dr. King. He fought for moral right, and was killed for it. (As for Jackson, I have no use for him either way, so no difference there, either.)
Likewise, Rosa Parks really did have her civil rights violated by an immoral law, and really did fight it through to the end to have it changed. And it really was changed, for everybody.
The fact that she knew in advance what she was about to suffer in no way cheapens or falsifies what she did. Jesus knew what he had coming, didn't he?
You are following the moral side of this issue and I was addressing the "Truth" as raised by PARADOX.
You have feelings about why MLK was shot and I would like to know the Truth.