They are guilty.
I also think there are many people using this tragedy as an excuse to commit crime and somehow justify their behavior via a bifurcation of their world view.
Are you applying your beliefs about a group (the police in this case) at an individual level or in one broad stroke? Is not the definition of bias / prejudice (racism as a subset?) essentially applying beliefs at the group level rather than the individual level?
When cops break the law, and that's what they're doing here, they destroy faith in the justice system, in rule of law.
What's crime? Is looting a Target, crime? Sure, according to tons of various laws in the USA, it is. Think about it another way though - there's a pile of food, more food than anybody could possibly eat before it spoils. In fact, lots of it does get thrown away, because it spoils. You're hungry, you walk up, take some, eat it, and leave. Did you just do something unethical? You take a TV, a pure form of entertainment and nothing more. Did you just do something Bad? Hm. Maybe, if I followed a very very long chain of events, I could say that the taking of the TV meant a CEO got to buy 1/100th less TVs for himself, sure, that's kinda bad I guess.
Is it... worst than someone with a state-sponsored monopoly on violence doing, well, any of the following? :
https://news.ycombinator.com/item?id=23373619
There is no "excused crime" happening here. It's people recognizing that the rule of law is broken, that those with the Most Might are doing as they please, and telling themselves "well fuck it, I'm going to get a TV then."
Expectation of the citizenry to, uh, "respect property rights" (lmfao) is absurd when we don't even expect our police to respect the rights of People to exist without violence being committed against them.
So in short, who gives a fuck if target loses TVs - until we solve police brutality to the point that every cop is held criminally accountable for unethical violence, I say let it all burn, because the harm done by a looted target is immeasurably less than even a single instance of police brutality.