Each time an act of racial injustice or controversy erupts in America, a certain type of people will look at the chaos and fury of the protests and claim, "Dr. King would not approve. They should be more like Dr. King."
We often emptily invoke MLK's name in an effort to suggest racism isn't as big a deal as people think. We make him to be the great crusader who quashed racism, that the "I Have a Dream" speech was the magic spell that cured bigotry forever. We tell ourselves these things not out of reverence for Dr. King, but so we don't have to face the fact that racism and oppression are still very real and powerful monsters. We tell ourselves racism in modern America is an invention of the liberal media, or some other such boogeyman, designed to divide us.
So, when protests turn violent, no matter who's at fault, we use a cliche we've invented that goes: "be like Martin Luther King!"
Yet we have no idea what we mean by that. If it simply means, "be more peaceful and you'll cure racism," our ignorance is blatant as we forget that King, a peaceful activist himself, met his end in an act of racial violence - proving racism did not end at "Free at last, free at last..."