Capital successfully fought to put lead into American's blood and lungs for a century after it was known to be poison. To this day they're still fighting to keep it there.

https://www.theatlantic.com/health/archive/2013/04/why-it-took-decades-of-blaming-parents-before-we-banned-lead-paint/275169/

https://www.jsonline.com/story/news/politics/2016/09/14/report-lead-paint-makers-helped-gov-walker/90349256/