Propaganda played a crucial role in influencing public perception during the Cold War by shaping narratives about the ideological conflict between capitalism and communism. Governments used propaganda to promote their own political systems while demonizing the opposing ideology. In the United States, media portrayed the Soviet Union as an aggressor, justifying military interventions and the arms race. Conversely, Soviet propaganda emphasized the inequalities of capitalism and the supposed superiority of communism. This constant flow of information reinforced biases, mobilized public opinion, and justified governmental actions, creating a climate of fear and mistrust that characterized the period.