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.