In 2001, the band went on tour with Slipknot throughout the United States and Mexico. Following a performance in Grand Rapids, Michigan, Odadjian was allegedly harassed, ethnically intimidated, and was physically assaulted by security guards backstage, who then dragged him out of the venue. Odadjian received medical attention from police and later filed a suit against the security company. Despite the incident, the tour was a success and System of a Down and Slipknot went on the Pledge of Allegiance Tour together with Rammstein in 2001.