American economist at the University of Chicago, when he did research to prove that more guns = more crime, he found the data proved the opposite. So he did more research and publishd and got asked to leave as the data kept proving the Gun Controllers wrong. He also worked at Yale University, the Wharton School of the University of Pennsylvania, and the University of Maryland, College Park, and at the American Enterprise Institute conservative think tank. He's considered by the left as a Gun Rights Advocate, but by himself and others as a pro-data/pro-truth advocate.
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2019.07.05 John Lott - For posting the truth that the New Zealand killer’s manifesto said that he attacked the Mosque to get more gun control/gun bans in New Zealand and the US, that he was a socialist, environmentalist who hated capitalists and trade -- so twitter banned him (details at: 2019.03.14 Christchurch Shooting). Apparently the truth in the face of the left/medias false narrative that the guy was a crazy right winger, was too much for them bare, so they banned the source of Truth.