Ummm...one problem with that rationale...they supported Clinton's actions in 1998 when he was making noise about Saddam and WMD. Sometimes things are just as simple as they seem...the bottom line is that they just flat-out hate Bush and Republicans.
True. But every anti-war protest includes all the anti-western causes: Anti-Globalism, Anti-Capitalism, Environmentalism, etc. Why has the anti-War left become virulently anti-Semitic? Because Judaism is a foundation of western principles.
I suppose in the melange of the average protesters mind, they haven't got this clear. But I believe their leadership (see WWP/ANSWER) knows very well it is an anti-civilization project.