Forget chem-trails lead and traffic will get you locked up.
Atmosphere lead is linked to aggression and impaired brain development and aggression. Analysis of crime states comparing them to environmental lead levels reveals a startling correlation. Thought it is not the only factor, lead is a driver of violent crime.
Growing up, when people said or did something really stupid or made a habit of it, sometimes jokingly it would be said, that they ate a lot of paint chips as a kid. It seems folks were on to something.