What did Washington want by supported Ngo Dinh Diem, that make a crime against humanity ?

Question

In May 8,1963 the government security service fire gun and launched grenades into a crowd of Buddhists. This moment known as Hue Vesak shooting

The Buddhists were protesting against a government ban on the flying of the Buddhist flag on the day of Vesak.

Answer 1

The Hue Vesak shootings refer to the deaths of eight unarmed Buddhist civilians on May 8, 1963 in the city of Huế in South Vietnam, at the hands of the army and security forces of the government of Ngo Dinh Diem. The army and police fired guns and launched grenades into a crowd of Buddhists who had been protesting against a government ban on the flying of the Buddhist flag on the day of Vesak, which commemorates the birth of Gautama Buddha. Diem's denial of governmental responsibility for the incident—he instead blamed the Vietcong—led to growing discontent among the Buddhist majority.

The incident spurred a protest movement by Buddhists against the religious discrimination of the Roman Catholic-dominated Diem regime, known as the Buddhist crisis, and widespread large-scale civil disobedience among the South Vietnamese. On November 1, 1963, after six months of tension and growing opposition to the regime, generals from the Army of the Republic of Vietnam conducted a coup, which saw the removal and assassination of Diem.

I would venture to say that our government's involvement and support of Diem's oppressive actions went against the grain of our government's policy that allows the expression of free speech and the right to protest against such oppression. It was a crime against humanity because the priests that were killed were unarmed and defenseless. How does this compare to the Kent State shootings in which protesters against the Viet Nam war were shot and killed?

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