Kevin Drum provides still more data on the lead/crime connection, specifically with respect to African-American juveniles. Arrest rates for black kids have been falling faster than arrest rates for white kids, in part because blacks had more lead exposure and therefore benefited more as exposures fell.
It’s frustrating how much more willing “conservatives” are to use crime as a stick with which to beat black people than to do something about it. (See also: fetal alcohol.)
But maybe if Kevin keeps pounding this drum for another decade or so something will start to happen.