Didn't freakenomocs claim it (crime rate) was (primarilary) about abortion in the 1970s and less unwanted (and unsupervised/undisciplined) children growing up?
Didn't freakenomocs claim it (crime rate) was (primarilary) about abortion in the 1970s and less unwanted (and unsupervised/undisciplined) children growing up?
There’s also the leaded gasoline theory.