Libertarianism
Anarchism

and I suspect a majority would label both as being "extreme." Giving up
liberties in exchange for something else is considered a non-extreme
position, if not almost a law of nature.

It's a question of degree. Neither liberty nor government is extreme.
However, anarchy (no government, total liberty) and totalitarianism
(total government, no liberty) are extreme.

It's a question of perspective. If one believes that we are already too
far in one direction, the belief that going further in that direction is
extremist.

Jose
--
There are two kinds of people in the world. Those that just want to
know what button to push, and those that want to know what happens when
they push the button.
for Email, make the obvious change in the address.