Gun control supporters will no doubt be all aflutter about a new book that tries to validate one of their longtime favorite theories, while appearing to help their preferred presidential candidate appeal to anti-capitalist voters within the Democratic Party. The theory, which makes perfect sense to voters who believe that demand is driven by supply, is, as the Washington Post describes it, that “[g]uns in America were no big deal until big business made us love them.” The book, The Gunning of America: Business and the Making of American Gun Culture, points its accusatory finger at the Winchester Repeating...