On 2011-09-20, Edward A. Falk wrote:
In article ,
Cross-Slide wrote:

Everyone carries a cell phone, including still and video, and audio
recording ability.
Video cameras are everywhere. Crimes of opportunity are on the
decline.

Another theory is the legalization of abortion. Now there's a lot
fewer people who grew up as unwanted children.


This was popularized in Freakonomics and I find this to be an
interesting, and attractive, but unproven proposition.

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