Let's not forget that law enforcement is a violent profession. Cops deal with violent and potentially violent situations every day.
That's a reason for holding them to a higher standard, not for making excuses for them.
When cops go into a situation where they have to deal with an angry, armed person, the situation is very likely to escalate to the point where the cops must use force to subdue the person and possibly lethal force to prevent the person from harming themselves or others.
And if they can't handle those situations without accelerating the escalation, they shouldn't be cops in the first place.
When you are trying to subdue a person who is or may be armed and is refusing to comply with your verbal directions, then force may be the only answer.
No, it's not. Stop, think, is it actually necessary to subdue this person in this moment?
Not all verbal directions given by cops are lawful orders that non-cops are legally bound to obey. Cops should not escalate to force if someone is ignoring directions that are not lawful orders.
There are over 1,000,000 law enforcement personnel in the US. If only 5% are bad apple, then there are 50,000 bad cops on the street.
Every cop who defends a bad apple is a bad apple.
But it's not 5%.
I've seen the following which comes from an experienced police trainer who does use of force training
On any given day, in any police department in the nation, 15 percent of officers will do the right thing no matter what is happening. Fifteen percent of officers will abuse their authority at every opportunity. The remaining 70 percent could go either way depending on whom they are working with.
The way I count it, that's 85% bad apples.