The big three television networks virtually ignored the massive, grass-roots "tea party" surge in 2009, and so far this year have maligned the movement as teeming with racists and violent fringe figures, according to a report by the Media Research Center.

"Rather than objectively document the rise and impact of this important grassroots movement, the 'news' networks instead chose to first ignore, and then deplore, the citizen army mobilizing against the unpopular policies of a liberal president and Congress," wrote MRC Research Director Rich Noyes.

As a nation-spanning "Tea Party Express" caravan plans to pull into Washington for a "tax day" rally on Thursday, a Rasmussen poll finds that the number of people who say they're part of the tea party movement nationally has grown to 24 percent, up from 16 percent a month ago...