re: What would MLK say today about our racial divide in the country?

Oh this is stupid. Black people calling white people out on their shite and demanding equal protection under the law isn't harming race relations.
Here's what MLKJr would say about that kind of thinking:
"First I must confess that over the last few years, I have been gravely disappointed with the white moderate. I have almost reached the regrettable conclusion that Negro's greatest stumbling block toward freedom is not the White Citizen's Council or the Ku Klux Klan, but the white moderate who more devoted to order than justice; who prefers a negative peace which is the absence of tension to a positive peace which is presence of justice; who constantly says "I agree with the goal you seek but I can't agree with your methods of direct action;" who paternalistically feels he can set a timetable on another man's freedom; who lives by the myth of time and who constantly advises the Negro to wait until a more "convient season".

LINK