The Minneapolis Police allows their officers to carry firearms, too. But if you misuse your firearm and kill someone unnecessarily then you are going to be prosecuted, convicted, and jailed. Just ask former Officer Noor.
There is no reason why this officer should walk. He killed a man unnecessarily. His actions were deliberate. He should be prosecuted.
The difference is they allow them to carry firearms. The question is whether or not the neck restraint was allowed.
According to a link I posted last night, a researcher of force used by police, professor from U of South Carolina said a few departments allow it.