Not really totally self inflicted. Blacks in the 40s and 50s were entering American culture as the great waves of immigrants of 40 years before had done. They were moving out of the South into the industrial North and becoming citizens with families. They were on their way to the middle class. Then along came LBJ and the Great Society and War on Poverty which began the dissolution of the black family. Without family to rear the children there is much less or no inculcation of values. Without family there is less incentive to work because children are no longer part of one's purpose but rather are no more than proof of manhood. Some men work hard to improve themselves whether or not they have a family. Most are less inclined to work hard or at all if they support no one but themselves.
Add to that the cornucopia of government "assistance" available and work becomes something for eccentrics. Why work when you can get money for nothing? It becomes a "right" and rage ensues if that right is threatened.
IIf, instead of Negroes moving north it were again Irish flooding into Ellis Island when the War on Poverty and Welfare as Right began then it might well be the Irish rioting and demanding vengeance.