The significance of the Tet Offensive in shaping public perception of the Vietnam War was profound. Launched in January 1968 by North Vietnamese and Viet Cong forces, the surprise attacks on South Vietnamese cities shocked the American public and contradicted official claims that the war was nearing a conclusion. This pivotal event led to growing anti-war sentiment in the United States, shifting public opinion against the war and increasing calls for withdrawal. It highlighted the complexities of the conflict and raised questions about American involvement.