Having a cop point a gun at you because he thinks you are possibly in the process of committing a felony is reason enough for suspension in many European countries like Germany and Switzerland, for example.

I know that this discussion is about US law, but I want to add this here to put in perspective how skewed law enforcement regulation is in the US.

Much of what's perfectly acceptable in the US would be considered abuse of power in Europe. Such as pointing a gun at someone just because that someone could possibly be in the process of committing a felony.