In what has become a subplague in the epidemic of police violence, two police in West Milwaukee, Wis., will not be charged in the death of a 22-year-old man diagnosed with schizophrenia, whom they tased more than a dozen times.

Even though she was brandishing a steak knife, when Decynthia Clements emerged from her SUV and walked toward Elgin, Ill., law enforcement officers, it seemed as if the cops had everything under control. Clements’ truck was immobilized and surrounded by at least seven officers. A K-9 unit was on the scene. The officer…