Why did people supporting the Vietnam war feel it necessary to hold demonstrations?

Supporters of the Vietnam War held demonstrations to express their commitment to the U.S. military involvement, believing it was essential to stop the spread of communism and support South Vietnam. They aimed to rally public opinion in favor of the war, countering growing anti-war sentiment. Demonstrations also served to galvanize political support, reinforce national pride, and demonstrate solidarity with American troops. Ultimately, these actions reflected their conviction that the war was a crucial aspect of American foreign policy.