I would assume that most of them are Republicans for several reasons (note: when I write Bush I mean Bush and the Republicans):
1. Bush created MASSIVE dept and no Teabaggers protested
2. Bush created a much bigger government (largely due to creating the Dept. of Homeland Security) and no protest
3. Bush created the Patriot Act which many argue restricted civil liberties and personal freedom and no protests
4. From all the videos I have seen, the vast majority of them voted for "Sarah" which would align them with Republicans
so I think it is very easy to confuse them with Republicans... and/or morons
on 1, that's a dumb argument. whatever bush did, obama is doubling. if the left really cared about the debt, which they supposedly did under bush, being silent as obama doubles it is just as bad as the right remaining silent on bush. not all republicans supported this massive government spending increases under bush- people like john mccain, jim demint, mark sanford and, especially, jeff flake all routinely took the administration to task for it's spending....and that's without mentioning what's left of the libertarian/republican alignment (which this administration is doing a great job of putting back together)....
3 is irrelevant for the purposes of this thread. . .in any event, obama certainly doesn't appear to be distancing himself from the more distasteful aspects of it (state secrets, anyone).
on 4, i would not trust your sources. . .
as for 2. . .i would think that creating a deparment devoted to protecting its citizens would merit some size, especially since it consolidated several agencies from various parts of the government into one agency.
finally, so what if people remained silent during the bush the younger years? simply because they were silent during those years is no reason to ridicule them for finally making a stand against a massive increase in wasteful and unnecessary government spending, the likes of which this country has never seen, all to push through a package aimed at increasing the size and reach of the federal government.