Peace activism refers to the organized efforts and movements that aim to promote peace and oppose war, often through advocacy, protests, and public education. This term encapsulates a wide range of activities and ideologies, particularly during the tumultuous periods of conflict, where individuals and groups rally against militarism and seek nonviolent solutions to conflict. In the post-1945 United States, peace activism became particularly prominent as a response to military engagements such as the Vietnam War and was often intertwined with broader cultural movements, including the counterculture of the 1960s.