evidence: Murders and aggravated assaults shot up dramatically under Trump, while most other types of crime declined. [...] The rate of aggravated assaults also rose under Trump — by 12.6%. [...] The big jump in the number of murders is entirely due to a 29% rise in Trump’s final year, which also saw millions laid off from jobs due to the COVID-19 pandemic; widespread protests against racism and police brutality following a Minneapolis policeman’s murder of a black man, George Floyd; and a surge in production and sales of firearms.