Abraham Johannes Muste, commonly known as A.J. Muste, was a Dutch-born American activist and labor leader. He was a prominent figure in the labor and peace movements, advocating for nonviolent resistance as a means of social change. Muste played a key role in organizing various labor strikes and protests, including the successful textile workers' strike of 1919. He later became a leading advocate for pacifism during World War II and the civil rights movement. A.J. Muste's legacy continues to inspire activists around the world to strive for social justice through peaceful means.