It's laid out in a new book.
Grauniad review:
https://share.google/4v28K7StDU7L4abRg<1920s doctors observe lead poisoning from paint makes children "crazy-like"<Guggenheim dynasty builds its' fortune off mining and smelting metals<sulphur dioxide, arsenic, and lead particle cloud emanates from smokestack of smelting facility in Ruston, outside Tacoma<Ted Bundy grows up in Tacoma<Gary Ridgeway the Green River Killer is from Tacoma <Charles Manson is in the clink in Tacoma for five years before starting his race war cult The Family <1974 murder rate in Tacoma goes up by 62%>>685006>Living in america drives people insaneYou're right. It does, anon. But specifically it was the fumes.
-OP
From further down in the Grauniad review:
<Most perpetrators of sexual violence are known to their victims, but in the US during the 1970s, almost 300 men were compulsively trolling for strangers to abuse and kill. <That number plummeted, along with the overall crime rate, during the 1990s, which happened to be after lead was removed from gasoline and most of the big smelters closed down. Unique IPs: 14