What war did the 1960s counterculture vehemently oppose?

Here is the question :

WHAT WAR DID THE 1960S COUNTERCULTURE VEHEMENTLY OPPOSE?

Here is the option for the question :

• Korean War
• Cold War
• Laotian Civil War
• Vietnam War

The Answer:

And, the answer for the the question is :

Explanation:

[STC009122]. The involvement of the United States in the Vietnam War was met with intense opposition by the counterculture of the 1960s, most notably the hippie movement. The United States entered the war officially on March 8, 1965, and as the battle intensified overseas, the amount of opposition that existed within the country increased. Throughout the duration of the conflict, anti-war activists coordinated large demonstrations attended by thousands of people. The signing of the Paris Peace Accords in January 1973 brought an end to the involvement of the United States in the Vietnam War.