A lot of Americans were against the Iraq war (Bush 2's). But it really didn't matter because the Republicans were steam rolling anyone who stood against their agenda with the 'Anti-American' bullshit that in a post 9/11 world there was just no real response to.
The 'funded by George Soros' clip at the beginning is odd.
I couldn't find anything saying he did, but it looks like it was about this time he started to push back against the right wing propaganda circus. But I am calling bullshit on the Chicago protest against the war being some sort of false flag operation that Soros cooked up based on the opening credits of a youtube video.