In his 1992 inaugural address as president of the paleoconservative John Randolph Club, Murray Rothbard urged his audience to repeal the twentieth century! (p. 366). This invocation would have been a good alternative title for Justin Raimondo’s energetic and well-written new biography of Rothbard. The Austrian economist and libertarian activist spent a lifetime doing battle with defenders of the welfare-warfare state, which reached its highest form of development in the twentieth century. As we look back on that century’s record, it is difficult to disagree with Rothbard’s negative assessment of it. R. J. Rummel has even coined a word, democide, to describe the killing of civilian populations during war, the extermination of people in the pursuit of racial purity, the collectivization of agriculture, or other social-engineering desiderata that occurred during the twentieth century.