I do not know anything about the story but frankly, I think you need to think about it a bit more deeply. There is some very bad problem which led to a desperate person to get a gun, commit a robbery, escape and then get murdered in a shootout in the middle of traffic.
What caused him to develop into such a person, what brought him to the point of desperation? We will never know. What really happened? The police destroyed a life that might have been rehabilitated. The only story we know is that of the murderers. Who got the guy a gun and sent him to steal? We will never know until their next victim appears. Or was he acting alone? If so would the desperation have been solved by providing free therapy / painkillers? Was he going insane from pain, was he mentally ill? We may never know and there is little incentive now for anyone to try and find out.
Yes, it is not that I am anti-police but I would call it murder when a militarized force has the luxury of time and options, a satellite fix and ownership of the entire map, and still they intentionally pick the most highly graphic, most extremely violent, most dangerous solution which was to kill. (I mean dangerous to the murder victim and the people in cars nearby, though also a shootout is dangerous to police of course.)
I really have little understanding of this case, but it seems to me that if a person is highly addicted, economically disadvantaged and stupid, then it would be very easy for him to become desperate and crazy enough to get a gun, steal, even kill to get his fix. I have no experience except what one reads in fiction, sorry to say, so even here I admit I may not have all the information necessary to understand everything perfectly.
In order for our society to somehow cure itself from multiple insanities, we need to roll back the ultra-militarized force and the way of thinking that removes any possible valid story except that of authority, and we need to use the leeway that generates to do some actual investigation into the root causes, and fix them. Maybe organized crime, a past injury, a psychotic episode, who knows what was involved. We are not looking to justify his actions but to understand the train of errors that led to this catastrophe, like the train of errors that almost always exists behind a plane crash. Perhaps there are 100 reasons over the past 30 years why the man who was killed finally got to that point. Perhaps if he had grown up with the same genes in another country than the U.S., he might have gotten a chance to live longer. If we can identify any of those 100 reasons, those 100 errors, we could reduce murder, desperation, incarceration, drugs, and so on. And we might get more productive and happier members of society.
I appreciate that you are telling the way you see it honestly. That means this is an opportunity for you to learn. We are not living in Batman's Gotham City. If you have any respect for human rights or interest in our civilization advancing in maturity and not reverting to animalism or despotism, you must think harder. It is not win-win at all. NOBODY won. We all lost. You can only think of this as a win if you willfully ignore most of the story and subscribe to a fantasy where life is a zero-sum game. Perhaps like monopoly or a card game. Or the way it looks like on a police themed TV series. That is cognitive dissonance and is not reality. There were many opportunities for real win-win, if you think of it as society vs. this individual, or you vs. this individual, in the past. This was not one of them. This is when all opportunities for winning were lost forever and we failed.