https://reason.com/volokh/2021/02/01/exp...ide-spike/

"...Last year, cities across the country suffered from what I will call the Great 2020 Homicide Spike. Homicide rates were 30% higher than in 2019—an historic increase representing more than 1,268 additional murders (in a sample of 34 cities), according to an important new report released today by Professor Richard Rosenfeld and two colleagues. The new Rosenfeld report explains that this is a "large and troubling increase that has no modern precedent." The previous largest single-year increase in the United States was 12.7%, back in 1968....

This graph depicts the structural break (the vertical red line) in homicide trends–i.e., a statistically significant change in the times series occurring in the last week of May. This graph would seem to identify the increase in homicides igniting at that time–not earlier...."

Week of the Floyd riots.

People do what they think they can get away with.

Watching month after month after month of mass lawlessness garnering no consequences, people realize they can do what they want with impunity.

And given the forced isolation of reverse quarantines where we isolate the healthy instead of the sick, many people began to lose their grip on reality.