I was in the US for a few days shortly before the start.
Socialising in the bar after work, most people were against the war and particularly against Bush. (A biased sample, I know. Middle class IT professionals).
I returned a few weeks later, working with the same people. I was really taken aback by the complete change in opinion to fairly strong support for Bush and the war. Strong "patriotism" vibes.
I wish I'd seen more of the process that changed their opinions so quickly.