As we at NewsBusters have noticed, the media often pass off professional or semi-professional liberal activists as average Joes and Janes. The effect, of course, is to give a feel of authenticity to the problems, real or perceived, that these folks are struggling with, and often demand government intervention for.
So it's not surprising that the "undecided voters" in the recent Democratic debate in Vegas were often liberal activists. Bryan Preston of Hot Air looked into it. You can check out his blog entry here, or watch the embedded video posted above. (h/t Michelle Malkin)