Right, because two cops emptying both of their sidearms at the same time into a perp with a knife is much better than a single cop from 1969 who could disarm a hippie swinging a bowie knife at them.
Of course when a society becomes wicked, and life is cheap because safety and security is valued above all, INCLUDING life - we of course expect law enforcement to have the freedom to empty their weapons into anyone they feel threatened by.
You seem to be incompetent on the subject of liberty and where this kind of Death Squad Police mentality will lead us.
Maybe cops learned from the 60s that defending against a knife with a baton failed lethally often enough that shooting is preferred.
Is there ANY justification for a cop to shoot someone?