it's not lead poisoning. it's people going insane because they live in internet/social media bubbles that lead to constant escalation reinforcement. you can see that nonsense here on lemmy in this very thread where people reinforce a false narrative and then escalate it with more rumor and nonsense or cherry-pick facts from history/reality to reinforce the delusional narrative that the other side is 'evil' and refuse to acknowledge your own side is also evil.