Yes you can go after people if they are a suspect.You don't chase after someone with guns if they are unarmed and have not presented a threat to peoples safety or hurt someone. I believe the jury did the proper thing. You can't just go after people like that. Makes zero sense and is a public safety menace.
These guys were trying to collar him so he could be questioned by the police.....and he refused to remain at the scene. He was trying to escape.
If it was me....I would have just filed a report when the cops arrived because when it comes to things like this....being a good citizen will only get you thrown in jail, considering the recent trend we see in the news.