"Riots do not develop out of thin air..."
With all of the civil unrest this year including what has happened the last few nights in Charlotte, I've seen a quote by MLK surface repeatedly. Here is a section of his speech from September, 1967 (note the coming 50 year anniversary).
Urban riots must now be recognized as durable social phenomena. They may be deplored, but they are there and should be understood. 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. They are a distorted form of social protest. 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. Often the Negro does not even want what he takes; he wants the experience of taking. But most of all, alienated from society and knowing that this society cherishes property above people, he is shocking it by abusing property rights. There are thus elements of emotional catharsis in the violent act. This may explain why most cities in which riots have occurred have not had a repetition, even though the causative conditions remain. It is also noteworthy that the amount of physical harm done to white people other than police is infinitesimal and in Detroit whites and Negroes looted in unity.