Our wackos are better than your wackos:
The views of right-wing commentators in the grip of the paranoid style (Obama is a stealth radical, the Democrats are imposing socialism) are much closer to mainstream conservative and Republican belief than the views of their counterparts on the left (the levees in New Orleans were blown up by the government, the White House had something to do with 9/11) are to mainstream liberal and Democratic belief. The reasons are complex, but I would list these: the evangelical and occasionally messianic fervor that animates a part of the Republican base; the atmosphere of siege and the self-identification of conservatives as insurgents even when they monopolized political power; the influence of ideology over movement conservatives, and their deep hostility to compromise; the fact that modern conservatism has been a movement, which modern liberalism has not.
This is not to say that the more destructive forms of populism and outright paranoia can’t appear on the left. They have, they do, and they will, especially in times of extreme distress like these. It’s only to say that the infection has been more organic to the modern right.