Final answer:
The event that turned public opinion against U.S. involvement in the Vietnam War was the Tet Offensive.
Step-by-step explanation:
The event that finally turned public opinion against U.S. involvement in the Vietnam War was the Tet Offensive.
The Tet Offensive was a series of surprise attacks launched by the North Vietnamese and Viet Cong forces during the Vietnamese New Year in 1968. These attacks were a turning point in the war as they showed that the enemy was still strong and capable of launching major offensives, despite the claims made by U.S. officials. The Tet Offensive led many Americans to question the credibility of the U.S. government's statements regarding progress in the war and led to widespread disillusionment and opposition to the war.
While student protests, the assassination of Ngo Dinh Diem, and the Fulbright hearings were all significant events during the Vietnam War that contributed to public dissent, it was the Tet Offensive that had the most profound impact on public opinion and turned the tide against U.S. involvement in the war.
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