In Sir Arthur Conan Doyle’s novel, The Sign of the Four, the greatest detective of all time, Sherlock Holmes, asked Dr. Watson: “How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable,…

Throughout history, grandiose visions of world-altering consequences have motivated political assassins. Gavril Princip’s June 1914 rendezvous with Archduke Ferdinand in Sarajevo is a horrifying example. Despite the historical track record, until James T. Hodgkinson’s June 2017 criminal assault on a…