I understand why left-wing violence, lawlesness, etc are tolerated or encouraged - I'm asking why you think corresponding with Kaczynski does not bring the same scorn upon a person as corresponding with Rudolph would. Is it because people don't understand Kaczynski's intentions/thoughts (indeed, as reading the comments on this post would easily demonstrate)? Is it because they fundamentally agree with him, regardless of his contempt for liberals? After all, destruction of technology / industry has traditionally been a left-wing project in the U.S.
The first half of your first sentence answers the second, doesn't it? You could ask exactly the same questions with regard to John Brown - another classic American figure.
The supposed distinction between the "moderate" and "extremist" left is wildly overblown. There's no social exclusion, etc, in either direction. Nobody cares or is surprised about President Obama's association with Bill Ayers. Or, for that matter, Thoreau's with John Brown. Again, there's really nothing new here.
(I do think it's appropriate that in the nation of John Brown, we all need to walk through metal detectors to get on an airplane. Nothing could be more American than terrorism.)
