Of course, change didn't happen overnight. But the marginal cases did have children out of wedlock, which made it more acceptable for the next marginal case to do so. Meanwhile, women who wanted to get married essentially found themselves in competition for young men with women who were willing to have sex, and bear children, without forcing the men to take any responsibility. This is a pretty attractive proposition for most young men. So despite the fact that the sixties brought us the biggest advance in birth control ever, illegitimacy exploded. In the early 1960s, a black illegitimacy rate of roughly 25 percent caused Daniel Patrick Moynihan to write a tract warning of a crisis in "the negro family" (a tract for which he was eviscerated by many of those selfsame activists.)

By 1990, that rate was over 70 percent. This, despite the fact that the inner city, where the illegitimacy problem was biggest, only accounts for a fraction of the black population.