Who do you mean by "their" people?
If anything, the RNC is nothing more the wine and cheese crowd, which are on the side of Barry Obama.
However, there are groups that Napolitano and Holder are smearing tea parties with by trying to associate conservatives with these criminal thugs. The left are using such hate groups as these as representative of conservatives and tea party members.
The FBI has classified "sovereign citizens" as people who believe they are free from all duties of a U.S. citizen, like paying taxes. The FBI considers the group's members a danger for making threats to judges and law enforcement, using fake currency and impersonating police officers. 
Seven suspects (one of whom was in the hospital) allegedly ambushed deputies, killing two and injuring others on Thursday