"THEY have been abusing that trust" seems weird to me. In my opinion SOME (not "they", meaning "all") policemen have been abusing that trust, and it makes a world of difference.

Is stating that the situation was "chaotic" privileging police's perspective (which is sourced: "Col. Woodrow Jones, the state police secretary").

Dismissing every police statement because some of them were lies may be dangerous if it leads to even more "esprit de corps" (the very cause of many of such lies) among cops, or to less good guys in the police force (they usually don't want to join a despised group).

Stating that the situation "was chaotic" discounts the agency from the actors (passive voice, yet again). If that killing was justified, then meet the bar of justification - don't explain away the situation as if the trooper isn't responsible for having created it.

I see your point about othering and it's valid even for just balancing my own views. But the larger issue is that trust in the entire institution is failing.

When you have one cop murdering someone, three more standing around watching, a entire department that doesn't arrest the murder squad, a union that protects the whole lot, and a wider community that defends the whole miscarriage of justice - you don't have "one bad cop", but rather a popular culture of corruption.

Now certainly it isn't the case that every police department has had a case like that and reacted the same way. But all too many have, and if the actual good cops want to stop their institution from being indicted with a uniform brush, then they need to start speaking up about their criminal colleagues and actually enforcing the law even when the perp is wearing a uniform.

Any form (passive/active voice...) or description (especially of a wide array of attributes, for example of the context) can be interpreted in various ways, either discounting or condemning an actor.

"Chaotic", for me, conveys that there is no known way to always adequately solve this sort of problem ("911 calls ((...)) about a 'guy acting suspicious' who the callers thought had a gun"), however I reckon that interpreting it as some pseudo-justification is possible.

In a similar vein one may interpret the George Floyd case as exposing a "popular culture of corruption". One may also think that such cases have many causes, just like most major technological disasters result from a chain of causes (multiple and redundant safeties, however in some rare cases something isn't properly handled). A main cause may be that speaking up about a criminal colleague is only possible if you know for sure that he is guilty, meaning that you probably are a witness, and in such a case a colleague of the culprit. There are many reasons for teammates to cover-up each other. For example they may all be guilty of something (establishing a "popular culture of corruption"), or they may think that their colleague is guilty but should be pardoned given his merits (somewhat acting as judges). Some configurations of the rotten apple's team forbid any upper stratum (department, union, community...) to work adequately, as they will systematically amplify the testimony of those teammates.

You don't have "one bad cop", but rather a non-neglectable probability for his teammates to avoid speaking out about his reprehensible acts, and also unreasonable hopes about the ability of upper strata to attain to the truth.

In theory we may alleviate this by establishing larger teams and/or frequently changing (rotating) their members, hoping that it will reduce complicit distortions. In practice this leads to a new set of problems, not only related to cost but also to sheer practical efficiency: a team larger and/or populated with members not used to work with each other cannot be as efficient as a small (but sufficient) and more tightly made one.