I wonder if easier access to contraception, pornography and abortion have decreased the number of youth without access to opportunity and/or supervision.
heritability either biologically or by culture of crime?
Anyone with a genetic/cultural predisposition to addiction died as a crack addict in 1980-something, therefore no kids with the same predisposition alive in 2013? Don't have to be dead, just a reproductive failure. No kids, kids taken away, life in prison, etc.
Another interpretation is most crime is done by young urban males. A recent-ish development is the Daddy-figure has basically disappeared from the lives of those people, criminal or non-criminal alike. Therefore no following in Dad's footsteps if you have no idea who or what a Dad is. Which is too bad when Dad's not a dirtbag, but if he is, its probably a net positive.
Lack of employement opportunities, especially among the most disadvantaged, means the most disadvantaged kids are no longer latchkey kids?
