Mark Costello


Age: 59

Summary: labor commissioner of Oklahoma state from 2011 until 2015 who had established a non-profit advocacy group to oppose the positions of public employee unions after taking office, and who also opposed proposed federal regulations on hazardous child labor on farms.

Cause of Death: Homicide by stabbing

Born: November 10, 1955

Died: August 23, 2015

Oklahoma City, Oklahoma