MacArthur’s “I have returned” speech. The moment the Imperial Japanese Army decided to create the Imperial Japanese Army Navy because the actual Imperial Japanese Navy hated them. Kristallnacht. Most long medieval wars at some point. The latter half of Henry VIII’s life, probably starting with his jousting accident or killing his first ex wife maybe. The whole French Revolution. The assassination of Franz Ferdinand. The assassination of Lincoln. Probably a lot of assassinations, I’m going to stop now.