Urban riots are a special form of violence. They are not insurrections. The rioters are not seeking to seize territory or to attain control of institutions. They are mainly intended to shock the white community. ... The looting which is their principal feature serves many functions. It enables the most enraged and deprived Negro to take hold of consumer goods with the ease the white man does by using his purse.

Let us say boldly that if the violations of law by the white man in the slums over the years were calculated and compared with the law-breaking of a few days of riots, the hardened criminal would be the white man.

I won't argue that Dr King was big on it. But he absolutely supported and understood violent protests. The very violent protests that preceded actual, if minor, concessions.