Second, people should support liberal democracy because the citizens of liberal democracies are less likely to suffer violent death in civil unrest or at the hands of their governments. These two findings are supported by many studies, but particularly by the work of R.J. Rummel.Rummel finds that democracies between 1900 and 1987 saw only 0.14% of their populations (on average) die annually in intemal violence. The corresponding figure for authoritarian regimes was 0.59% and for to regimes 1.48%.28. Rummel also finds that citizens of liberal democracies are far less likely to die at the hands of their governments. Totalitarian and authoritarian regimes such as the Soviet Union, Nazi Germany and Cambodia under the Khmer Rouge have been responsible for the overwhelming majority of genocides and mass murders of civilians in the twentieth century.