Samuel “Joe The Plumber” Wurzelbacher, the 2008 campaign microcelebrity and Ohio congressional candidate, has an interesting theory about the Holocaust. Yesterday, Mr. Wurzelbacher released a campaign web video in which he blamed the Holocaust and the Armenian genocide on gun control laws.

“In 1911, Turkey established gun control. From 1915 to 1917 one-point-five million Armenians, unable to defend themselves were exterminated,” Mr. Wurzelbacher says in the clip. “In 1939, Germany established gun control. From 1939 to 1945, six million Jews and seven million others unable to defend themselves were exterminated.”

Mr. Wurzelbacher’s video features footage of him on a shooting rage blasting fruits and vegetables with a shotgun. As the clip draws to a close, Mr. Wurzelbacher, gun in hand, proclaims, “I love America.”...