https://www.liberationnews.org/rebellion-and-repression-capitalisms-long-hot-summer-begins/
Fairy sure that I'm not going to set a huge amount of store by the view of Liberation News ("Newspaper of the Party for Socialism and Liberation"), but I did at least read the piece you quoted. Much there to have a problem with, but I kind of got stuck on this:
Perhaps if the officers had been arrested quickly, these methods would have worked, but without the arrests and charges against the killer cops — which was the most basic demand of the uprisings — the movement grew and grew. The lip service of solidarity from the Democratic politicians was not enough. The firing of the four cops in Minneapolis was not enough. The pleas to “let the legal system do its work” enraged people further, and the third-degree charge for Derek Chauvin was an insult.
I'm no lawyer, but I don't think anyone of sound mind really wants to live in a society where the speed and severity of arrests and charges for an offense are determined by the size and volume of a mob. It seems to me that a speedy arrest and charge for the obvious offense (Chauvin charged with murder 3 for kneeling on Floyd's neck) was sensible and timely, not an insult, and taking a few days longer to consider all the evidence (some of which, including further videos, came to light after the protests had begun) before upgrading his charge to murder 2 as well as arresting and charging the other 3 officers is a legitimate and just process to follow.
I can understand why people, particularly some sections of the community, would feel like judicial decisions are unfairly weighted against them, and I have sympathy for that view. Raging at the process at this stage seems way off the mark though, especially when it looks to be working correctly.