evidence: Fact check: Biden says Trump oversaw 'the largest increase in murder in U.S. history' [...] "As president, Trump oversaw the largest increase in murder in U.S. history and he would make the gun violence epidemic worse if reelected," Biden said in a campaign email. [...] Numerically, this is on target: The number of murders rose by 5,795 from 2019 to 2020, when Trump was president. That’s the largest one-year increase since such data began to be systematically recorded in the early 1960s.