There was a fair bit of civil rights activity, vigilantism, defund the police initiatives, and riots that coincided with this period that almost certainly was exacerbated by Covid mandates. We also lack social services other Western nations have and homelessness spiked in big cities coinciding with loss of employment.
I hid out in the Denver Lodo area by the main train station in a luxury building doing my cushy remote software gig while right outside my building were bands of homeless teens doing hard drugs in broad daylight. Occasionally assaults happened, sometimes for seemingly no reason. There was a citizen patrol group formed by homeowners to help keep the area safe by working with the police until permanent encampments were set up. Some homeowners were irate about what police would and wouldn’t do. It was a weird time.
I hate saying this as I’m firmly on the left and this stuff is a bogeyman of the right, but I imagine it must play a role if we’re trying to ask what was unique about US culture during this period.