We had this happen in my town a couple weeks ago. Cop got called for a mental health check because a 19year old with a knife was acting erratic. Cop pulls up and gets out the car, the kid runs at him yelling “shoot me! Shoot me! Shoot me!” so the cop pulled out his gun and shot him. Didn’t go for the tazer or the his mace, just right to deadly force despite being called over specifically to prevent the kid from dying.
Cops should neve, under any circumstances, be called in for a mental episode. All they will do is escalate the situation and cause harm.