As has been pointed out in a recent comment thread here, there are some similarities between the pro-union rallies in Wisconsin, and teabagger rallies everywhere. This morning I read an interesting take on the idea. It isn't very long, so here's the whole thing:
There’s something about the union demonstrations in Madison, and the excitement it has caused on the left, that reminds me of the Tea Party. I think I’ve figured it out what it is. The advent of the labor movement is at the heart of the left’s sacred creation myth. The sense on the left that unions are under siege gives them something to fight for with a bracing sense of historically-rooted identity and moral authority. Similarly, the sense on the right that America’s foundational values are under siege gave the Tea Party something to fight for with a bracing sense of historically-rooted identity and moral authority. Of course, the Tea Party has about as much to do with the values of the American founding as John Adams has to do with Raytheon, and public-sector unionism has about as much to do with preventing worker exploitation as Eugene Debs has to do with unfireable $100,000 a year public-school teachers. But it’s nice to have a team, and a noble lineage, and to get out there and really give the bastards who are stealing our country hell.
(No less split along partisan lines, the comments there are generally much more enlightened than those that disagree here. But the author is smarter, and more and better read than me.)