Why were Americans opposed to the Vietnam War?

The small antiwar movement grew into an unstoppable force, pressuring American leaders to reconsider its commitment. Peace movement leaders opposed the war on moral and economic grounds. The North Vietnamese, they argued, were fighting a patriotic war to rid themselves of foreign aggressors.

Explanation:

I got it from an article :)

honestly i love the walking dead, mainly the quotes. “well, pardon me young man, excuse the [insert bad word here] out of my gosh darn french, but did you just threaten me? ” sksk (of course it's not the exact words)