1.) Do you live in the US?
2.) In this case, the cop needed to use deadly force.
3.) Quit buying into the "anti-cop, police brutality" bullshit. I'd like to see you spend your life on the street without getting into a fight, and then having witnesses see the whole thing, only to say you were the agressor because they had a bias against you. That's not to say that some cops are out of line against suspects, but the majority are NOT.
4.) Sometimes it takes force to conquer an opposite force.
so when you say deadly force is "ALWAYS" unnecessary, you're wrong.