Somebody is wishing to deflate the phony moral superiority of the leftist civil rights social justice warrior media industrial complex I imagine.
If MLK was a sexist exploitive pig, then many me-too women may start to edge away from leftist civil rights groups, especially the white soccer moms. The hope is to cause the leftists’ house to be divided against itself. Someone wants to marginalize black leftist power.
It was probably the doings of some grumpy retired FBI agent that is sick and tired of not seeing any Caucasian or not presumably gay person in every single TV commercial.