Which was caused in large part by...anti-black racism.
From your link:
I wouldn't deny that poverty is a major factor in both drug use and single motherhood, though not the only factors. People still have free will. Not all poor people do drugs or have babies out of wedlock, even if a disproportional amount do. What you rarely hear anymore, especially from the left, are loud voices advocating for people to stop having children out of marriage or long-term committed relationships.
When looking at poverty, the left wants the government to solve the problem and ignores personal agency while the right wants individuals to embrace personal responsibility and solve their own problems while ignoring institutional supports. I would say both are important to solving the problem so I support advocating for government helping people and also encouraging people how to help themselves rather than simply thinking of themselves as victims, even if they have been legitimately victimized.
In that sense, both left and right thinking only acknowledge certain parts of reality while ignoring other useful parts of reality, making both ideologies flawed by nature, which is why I embrace a moderate worldview. I'm a bit right-leaning socially because I think the left dominates socially and have gone a bit too far in a bunch of ways, while I lean left economically because the right dominates economics and have gone too far themselves. I think there's room for both personal responsibility and caring compassion for others.