An effective campaign of civil resistance, and even the achievement of a nonviolent revolution, may be possible in a particular case despite the government in power taking brutal measures against protesters. The commonly held belief that most revolutions that have happened in dictatorial regimes were bloody or violent uprisings is not borne out by historical analysis. Nonviolent revolutions in the 20th century became more successful and more common, especially in the 1980s as Cold War political alliances which supported status quo governance waned.