That's not really relevant to this thread. Guns have been a problem for so long in the US. This doesn't have something to do with the corona crisis. Even without corona, US would have this problem.
Ermm, there's been far too many shootings in the US, but I don't recall a lot of you-didn't-hold-open-the-door-for-me-bang-you're-dead-level-of-callous-regard shootings
. I do think the outbreak is a factor.
I don´t want to restart the discussion about guns in America, as we have been warned against it, but I want to focus instead on people madness and evil. A poor security guard killed only because he asked people to wear face masks to enter to a store. What is happening to humanity?
https://edition.cnn.com/2020/05/04/us/michigan-security-guard-mask-killing-trnd/index.html
It's a lie that we tell ourselves that man has evolved above the animals...all it takes is a blackout (electric and/or communications) that lasts longer than one night and humanity starts reverting to caveman behavior in a matter of days. Society is a much more fragile construct than we realize. One overly large solar flare that knocks out electrical grids worldwide that can't be fixed for a week or two and we are done...mass starvation, rioting and looting, etc.
The outbreak just makes it worse, because now you have the shelter in place along with a fundamental fear of the unknown and unseen, but that fear is targeted at other people.