“Those who want to blame crime on a lack of jobs cannot explain why crime rates fell in many cities during the Great Depression, when unemployment was high, and spiked during the 1960s, when economic growth was strong and jobs were plentiful. Indeed, the labor-force participation rate of young black men actually fell in the 1980s and 1990s, two of the longest periods of sustained economic growth in U.S. history. Shouldn’t ghetto attitudes toward work at least be part of this discussion?”