From the plus ça change files, a terrific article comparing the Tea Party's beliefs to that of the John Birch Society:
As it happens, I’ve been doing some reading about John Kennedy, and what I find startling, and even surprising, is how absolutely consistent and unchanged the ideology of the extreme American right has been over the past fifty years, from father to son and now, presumably, on to son from father again. The real analogue to today’s unhinged right wing in America is yesterday’s unhinged right wing in America. This really is your grandfather’s right, if not, to be sure, your grandfather’s Republican Party. Half a century ago, the type was much more evenly distributed between the die-hard, neo-Confederate wing of the Democratic Party and the Goldwater wing of the Republicans, an equitable division of loonies that would begin to end after J.F.K.’s death. (A year later, the Civil Rights Act passed, Goldwater ran, Reagan emerged, and we began the permanent sorting out of our factions into what would be called, anywhere but here, a party of the center right and a party of the extreme right.)
Reading through the literature on the hysterias of 1963, the continuity of beliefs is plain: Now, as then, there is said to be a conspiracy in the highest places to end American Constitutional rule and replace it with a Marxist dictatorship, evidenced by a plan in which your family doctor will be replaced by a federal bureaucrat—mostly for unnamable purposes, but somehow involving the gleeful killing off of the aged. There is also the conviction, in both eras, that only a handful of Congressmen and polemicists (then mostly in newspapers; now on TV) stand between honest Americans and the apocalypse, and that the man presiding over that plan is not just a dupe but personally depraved, an active collaborator with our enemies, a secret something or other, and any necessary means to bring about the end of his reign are justified and appropriate. And fifty years ago, as today, groups with these beliefs, far from being banished to the fringe of political life, were closely entangled and intertwined with Senators and Congressmen and right-wing multi-millionaires.