In one chapter of his immensely troubled life, James Earl Ray tried to make his name as a Mexican porn director named Eric Starvo Galt. Frustrated with a lack of success and jilted by a lover, he came back to the USA, and within a couple years, had killed Martin Luther King Jr.
Lets say for one reason or another, he is successful enough to stay in the porn buisness - aside from MLK living past his OTL assasination, what buttefflies might we see, for both James Earl Ray and MLK, to say nothing of the world.