A newly released transit video, showing the stabbing death of a Ukrainian refugee on a Charlotte, N.C., light rail train, has prompted the FBI and DOT to investigate.

The sickening attack occurred soon after Iryna Zarutska, 23, boarded a South End light rail train in Charlotte.

Commentators are criticising the judicial system after a graphic video showing the killing of Iryna Zarutska on a train in Charlotte was released.