No, they weren't. The "antiwar" organizations were led by the pro-enemy People's Coalition for Peace and Justice (PCPJ), a communist-front outfit and the New Mobe (formerly the National Mobilization for Peace), a Socialist Worker's Party front and both of those organizations were in direct contact with the enemy throughout.
Only the truly uninformed really thought that the antiwar movement was a "spontaneous uprising of conscience".
There were only two parts of the antiwar/pro-enemy movement: the communist sympathizers who wanted the US to lose that war and the willing dupes who were looking to avoid dangerous service. The children of those people are who make up the Obama team.
Yep... ditto for their modern-day fellow travelers, the occupods.
Conservatives quickly realized that there were globalists on the left supporting the war to spread their Communist agenda and globalists on the right into it for profit. Isolationists, who I think of as today's Constitutional Conservatives, are still looking for someone who thinks of us as any more than voting fodder.
The original anti-war people didn't want anyone going to war, and didn't really understand why people did. When the leftists took over the protests, it became something very different, something the original anti-war conservatives never bought into.