They then immediately escalated to pepper spraying him, except they screwed up and got themselves instead (which enraged them). They also Tazered him and scared him badly enough he stopped attempting to comply and instead ran for his life.
I haven’t watched the videos, but from commentary I understand he repeatedly tries to de-escalate the situation and is bewildered at how angry the cops are at him. Police department has subsequently said there wasn’t even a valid reason to pull him over.
I saw a video recently of an incident where the police caught a murderer but then proceeded to kick the hell out of him while he was already down and no longer a threat while their police helicopter recorded the whole thing. Come to find out it was originated because the guy had killed a cop, but I was curious if there was a chance he’d walk free because people in position of authority can’t keep their emotions in check.
In that case probably not since the charges are completely unrelated to the incident.
It also depends on what evidence there is and how important is the testimony of the arresting officers to the case.
In general the prosecution would likely try to suppress the beating and the defense would have to make a case on why the police misconduct was relevant in this case.
Violation of Miranda Rights is also not a cause to get a case thrown out categorically it however can lead to any evidence such as an admission of guilt or any information the police has gained from the subject after their arrest being inadmissible.
TLDR if you are pulled over and beaten for no reason and then charged with resisting arrest and assaulting a police officer no prosecutor would likely take that to court.
If you got arrested for murder and there is a ton of other evidence there likely won’t be any impact. However you can still take the police to court in a civil law suit.
And before you reply that you’re “just sharing practical advice”, no what you’re actually doing is immediately taking the focus off of the police’s actions and putting blame onto the victim, and somehow making the discussion about his actions and what he did wrong. Not to mention reducing plain-as-day murder to simply a “fuckup”.
Beating a man to death is not a fuckup. That's a choice that was made over and over by the cops each time he was struck.