A black security guard had just detained a suspected gunman — then he was shot by police

A police officer has shot and killed an armed security guard at a suburban Chicago bar, and now the guard's mother is suing police.
Read more: https://www.abc.net.au/news/2018-11-13/security-guard-jemel-roberson-shot-dead-at-chicago-bar/10493424?source=Snapzu