“The protesters appear to be mostly union-organized, carrying banners signifying public worker unions, an elevator mechanics union and a steel workers union.”
There ya have it. Union-backed from the obamaturd thug machine.
Probably being paid as well
Here is a link that tells about how the unions paid Occupy CPAC protesters $60 a day to protest CPAC:
http://dailycaller.com/2012/02/10/occupy-cpac-protesters-paid-60-for-the-day/
Video at link.