My immediate instinct makes me think it’s due to less cops doing cop stuff, leading to fewer arrests, leading to more people out and about.
Cops seem to be a sort of leviathan suppressing crime by being a tyrant that catches many innocents through false arrests, harassment, police shootings, etc. So if police are reforming and stop their activity the upside is that there’s a bit more justice, but downside is that oppression may result in more homicide.
I think it’s a net positive to have more social justice with maybe more homicide.
I also irrationally wonder if, like the previous drop in homicide being attributed to removal of atmospheric lead [0], maybe people are staying in their house more and there’s some soon to be discovered building material that’s making us more violent. People didn’t think lead in gasoline was that big of a deal, but I’m sure happy it’s no longer used.
[0] https://en.wikipedia.org/wiki/Lead%E2%80%93crime_hypothesis