How many crackpots are there in the tea-party movement?

That is often the point when Tea Party supporters say they began listening to Glenn Beck. With his guidance, they explored the Federalist Papers, exposés on the Federal Reserve, the work of Ayn Rand and George Orwell. Some went to constitutional seminars. Online, they discovered radical critiques of Washington on Web sites like ResistNet.com (“Home of the Patriotic Resistance”) and Infowars.com (“Because there is a war on for your mind.”)…

Tea Party leaders say they know their complaints about shredded constitutional principles and excessive spending ring hollow to some, given their relative passivity through the Bush years. In some ways, though, their main answer — strict adherence to the Constitution — would comfort every card-carrying A.C.L.U. member.

But their vision of the federal government is frequently at odds with the one that both parties have constructed. Tea Party gatherings are full of people who say they would do away with the Federal Reserve, the federal income tax and countless agencies, not to mention bailouts and stimulus packages. Nor is it unusual to hear calls to eliminate Social Security, Medicare and Medicaid. A remarkable number say this despite having recently lost jobs or health coverage. Some of the prescriptions they are debating — secession, tax boycotts, states “nullifying” federal laws, forming citizen militias — are outside the mainstream, too…

WorldNetDaily.com trumpets “exclusives” reporting that the Army is seeking “Internment/Resettlement” specialists. On ResistNet.com, bloggers warn that Mr. Obama is trying to convert Interpol, the international police organization, into his personal police force. They call on “fellow Patriots” to “grab their guns.”

Mr. Beck frequently echoes Patriot rhetoric, discussing the possible arrival of a “New World Order” and arguing that Mr. Obama is using a strategy of manufactured crisis to destroy the economy and pave the way for dictatorship.