The wars in Chechnya, and the associated Caucasian terrorism in Russia, were a major factor in the growth of intolerance, xenophobia, and racist violence in Russia, directed in a great part against the people from Caucasus. The Russian authorities were unlikely to label random attacks on people of non-Russian ethnicity as racist, preferring calling it "hooliganism". The number of murders officially classified as racist more than doubled in Russia between 2003 and 2004. The violence included acts of terrorism such as the 2006 Moscow market bombing which killed 13 people. In 2007, 18-year-old Artur Ryno claimed responsibility for 37 racially motivated murders in the course of one year, saying that "since school hated people from the Caucasus." On 5 June 2007, an anti-Chechen riot involving hundreds of people took place in the town of Stavropol in southern Russia. Rioters demanded the eviction of ethnic Chechens following the murder of two young Russians who locals believed were killed by Chechens. The event revived memories of a recent clash between Chechens and local Russians in Kondopoga over an unpaid bill, when two Russians were killed. The Caucasians also face ethnic-related violence in the ranks of Russian Army.