@okie,
How can you say that with such assurance? You had to be somewhere around 10 when it happened, too young to be politically aware, and, as your posts here demonstrate, you are not a student of history.
Besides, even if most Americans "despised" (I would think that the proper word would be "feared," as loose cannons in Congress and the media whipped up a frenzy akin to that loosed on the world by Chicken Little) Communists or, perhaps, communists, that was no reason to police Viet Nam.
Viet Nam has become quite Americanized. City kids dye their hair brown or blonde, ride motorbikes and listen to dreadful pop music.