Observe the golden rule. Don't fucking cry about being labeled while you're slapping those labels on other people. What's good for the goose is good for the gander.
Most people are 99% bark, 1% bite. Most people will never be in a physical altercation where they are quickly overpowered into a compromised position by a stranger and perceive their life is in immediate danger. It's not about determination or fortitude, it's about survival. You are no longer thinking, you are reacting. Just because GZ hasn't shown the remorse everyone wants him to do, doesn't mean that he can't or won't. People go through guilt (remorse), shame, anger, sadness, resentment, a complete sense of hopelessness even decades after the event, some for the rest of their lives even with therapy. People react in all sorts of different ways to traumatic events and their is nothing to suggest that GZ is doing anything different then people's personal bias. If it were me in his shoes, I'd be permanently stuck in anger and hopelessness.
Sure, GZ coulda went home. It's not to say the same thing wouldn't have happened the next day, week, or month later. Sure the police would have still come that night and MAYBE taken a statement from GZ. Most likely they would have done a drive around the block, quick presence patrol, and then parked for 20 minutes so they can play with their cellphone before speeding recklessly off to their next call. Nothing the police could do or would do that night would have prevented what was a likely and inevitable confrontation between these two. But, your certainly entitled to your opinion.
Lawmakers and police in America are drama queens who have created so many laws with broad reach it's hilarious. You could be literally standing still and breathing and be arrested for disorderly conduct and it's essentially a 100% conviction rate as their is no real defense and is punishable by 6 months to a year in prison. Any misdemeanor arrest, including the assault of a police officer is pretty much a bunch of horse shit anyways. Felony arrests are a different story and even then, their are a lot of cases/instances where that's a bunch of bullshit to. IE: 20 over the limit is reckless driving, having a pocket knife over x inchs, being in the possession of burglary tools (aka common house hold tools and/or tools you would normally keep in your car in case of emergency). It is laughable to say a person arrested in a few instances has a "state of mind"