What's interesting to me is less the question of violent crime trending with lead exposure (or abortion), but more the holistic view of society getting more lib

What's interesting to me is less the question of violent crime trending with lead exposure (or abortion), but more the holistic view of society getting more liberal. As violent crime goes down, as dangerous chemicals/metals are removed from the environment, as the economy improves: all of these have an effect on the other (and I'm sure there are more). Clearly it would be difficult to create a study across all of those cohorts, but the point is that everything is improving, and with it the tendency for our society to be more accepting of differences.