J. Patrice McSherry, a professor of political science at Long Island University, states that "hundreds of thousands of Latin Americans were tortured, abducted or killed by right-wing military regimes as part of the US-led anti-communist crusade", which included US support for Operation Condor and the Guatemalan military during the Guatemalan Civil War.[40] According to Latin Americanist John Henry Coatsworth, the number of repression victims in Latin America alone far surpassed that of the Soviet Union and its East European satellites during the period 1960 to 1990.[41] Mark Aarons asserts that the atrocities carried out by Western-backed dictatorships rival those of the communist world.[42]