Some of the current studies even suggest that the passage of Rove vs. Wade and access to abortion was the reason crime went down. In an oversimplified version, the unwanted children who would have grown into murderers, rapists, and robbers were simply not born by the women who didn't want them.

That might stick in the craw of anti-abortion, law-abiding folks, but the correlative data are there.

The opinion piece author above suggests that "the broken window hypothesis" was the cause of the uptick in violent crime in the 1980s but there are some other, better supported, but more bitter tasting reasons, as well, for the decline of crime nation-wide in the mid-90s that had nothing to do with broken-windows.