Sorry, but this tragedy didn't start until liberalism, abortion, promiscuity, welfare and a hundred other 'progressive' policies infected American culture. You can't blame this on slavery.
Correct. For all the discrimination and extra burdens borne by American Blacks, the Black community was doing well up into the late 1950's, with no more of this social pathology than the White community. The "breakdown of the Black family" can be directly and decisively traced to socially dysfunctional liberal welfare politics. Patrick Moynihan did it in 1965.