In that case you have to say that it was purely accidental that heroin tore through the ghetto while most of white society was unaffected. And then the same thing happened accidentally twenty years later.
And then compare and contrast to the current opioid crisis, which did affect all strata of society because prescription drugs were marketed to doctors as safe.
What caused the downfall of the Black Panthers group?
Interested in the history and the social programs they created like free breakfast.