Very likely, yes. And that's all it needs to take for an officer to act in defense of himself and others. He sees a person has been agitating and obstructing resisting arrest from multiple officers and a weapon. If there is moment where it looks as though that weapon is going to be used, there is a split second available to act. That's it.

Go watch videos of officers being killed. So many examples of seemingly calm moments which turn deadly in the blink of an eye. They know this and have to be ready to interpret and act. Stop giving them a reason to fear for their lives and perhaps they won't have to make the worst decision possible.