This individual has plans to wreak havoc within the Tea Party with lies and exaggerations. The source of this is Wikipedia. It states as follows:
Opponents of the tea party movement have claimed they plan to INFILTRATE AND DISMANTLE the political group, by intensifying the perception of its members as racist, homophobic, and moronic. Jason Levin, an Oregon middle school teacher and creator of CrashTheTeaParty.org, claimed the group had 65 leaders in major cities across the country who were trying to recruit members to infiltrate the April 15th tea party events. Levin said they wanted to exaggerate the tea party's least appealing qualities.
Levin was placed on administrative leave April 15, 2010 by his school district after complaints were filed by several parents over his increasingly partisan political activism, and suspicion that he was using public school resources as a part of it. The investigation is ongoing.
Conversely, several of the major players in the Tea Party movement have formed a new National Tea Party Federation to help spread its message, and to respond to critics with a quick, unified response. "It took us 72 hours to respond to John Lewis," Skoda said, referring to the congressman who said a racial epithet was used at a Tea Party rally the previous month.
If you saw anti-semetic/racist members protesting in the crowd, they were probably planted there by Jason Levin.