...k? I'm making the case for vapid content on television being symptomatic of declining intelligence/skills. It's not causal.
As to African Americans, well, okay. But my experience surrounds Latinos. In Latino culture, we've got Catholicism encouraging as much reproduction as possible while declaring contraception sinful. There's also a lot of cultural misogyny, which entitles men to take what they want, while robbing women of the agency necessary to assert their own needs. (I was spared all of this because my mom is gay. Who knows how many siblings I'd have otherwise)
I don't really see a way out of that for several more generations at least. And I'm not terribly surprised you don't see those trends – statistically, if you're on Hacker News, you're very unlikely to have had an upbringing where you got to see any of this firsthand. And that's the point.