DENVER, CO - AUGUST 28: Daron Malakian (L) and Serj Tankian of System of a Down perform during Riot Fest at the National Western Complex on August 28, 2015 in Denver, Colorado. (Photo by Tim Mosenfelder/Getty Images)
DENVER, CO - AUGUST 28: Daron Malakian (L) and Serj Tankian of System of a Down perform during Riot Fest at the National Western Complex on August 28, 2015 in Denver, Colorado. (Photo by Tim Mosenfelder/Getty Images)