One of the lessons learned during the Vietnam War was that the depiction of wounded soldiers, of coffins stacked higher than their living guards, had a negative effect on the viewing public. The military in Iraq specifically banned the photographing of wounded soldiers and coffins, thus sanitizing this terrible and bloody conflict.
No event in American history is more misunderstood than the Vietnam War. It was misreported then, and it is misremembered now.
When the women's liberation movement began, when people began protesting against the Vietnam War, civil rights movement, at the beginning of those movements, the majority of the country was not with them, did not believe in the basic principles of any of those philosophies.
One big, glaring difference I can think of between Iraq and Vietnam is the news coverage. During the Vietnam War era, you had TV coverage of the war saturating the airwaves every night, and that coverage wasn't put through a military filter at all.
Suicidal violence is not the exclusive property of the Muslim world. Suicide bombings were a tactic of nationalist struggles in 19th-century Europe and Russia, the far east during the second world war and the Vietnam war, and in modern Sri Lanka.