SEE IT: Anti-masker stabs elderly man, gets killed by veteran cop

A Michigan man who was refused service because he wouldn’t wear a mask in a convenience store stabbed an elderly customer before being shot dead by a female police officer.

Michigan State Police said Sean Ernest Ruis was killed Tuesday morning following a conflict that began when he entered a Quality Dairy store at 6:45 a.m. without a facial covering to protect other patrons. Ruis, 43, was refused service. He allegedly became involved in a dispute with a 77-year-old shopper as well, whom he stabbed.