Why did many americans object to u. s. participation in the vietnam war?

Many Americans considered this war immoral and wrong because of the massacre of Vietnamese civilians, the death of American soldiers and the expense of the public money for an ideological war.

Explanation:

The Vietnam War, which occurred between 1959 and 1975, is regarded as the most violent armed conflict in the second half of the 20th century, occurring in the territories of North Vietnam, South Vietnam, Cambodia, and Laos. He was not only the most violent, but also the longest to take place shortly after World War II.

While the United States government was still involved in the war, the young Americans were protesting against the country's continued presence in the conflict. Early in 1979, pacifist groups and the civilian population generally campaigned in the streets asking the government to withdraw troops and return with its soldiers to the country. The TV showed at all times the barbaric scenes of that conflict, thousands of American soldiers dying, and their families in panic with nothing to do.

As it was not achieving any success in the war, having several consecutive defeats, and also not having the support of the population, in 1975 the US government accepted the Paris Agreement, withdrawing all its troops from Vietnam.