What does "cancel MLK for being anti-gay" mean? Who wants to ban, censor, or otherwise remove MLK from history courses, national discourse, etc., and is that v

What does "cancel MLK for being anti-gay" mean? Who wants to ban, censor, or otherwise remove MLK from history courses, national discourse, etc., and is that viewpoint representative of "woke" people or some sort of extreme outlier? If cancel simply means that no one should be above criticism and that heroes aren't perfect, then ... what's wrong with that?