Personally, I've always felt that it more of a circle than anything. People that get too far to the left start sounding just like the people too far to the right.

...snip...

Thus, those right-wing people you refer to should be called Reactionaries, not Radicals. I thought someone who calls himself the Grammar Police would know this

Your first statement regarding the political spectrum being more of a "circle" is pretty much saying exactly what Bitt said, in reverse. You say that people who get too far to the left (radicals) start sounding like the reactionaries. How can the reverse (calling the reactionaries "radicals") not also be true? That'd be a funny-looking circle...