Imagine if we had social media during WWII. The U.S. would have immediately descended into a huge scrum between the people who supported the U.S. against Hitler, the people who supported Hitler against the U.S., the people who believed Hitler was secretly American, the people who believed munitions manufacturers secretly caused the whole thing to drive up profits, and the people who believed the war wasn't actually happening and was just a big staged event. We wouldn't remember the war with images from the invasion of Normandy, the Yalta Conference and V-J Day celebrations in Times Square. Instead, it'd just be an endless sea of delusional morons yelling at each other on Twitter.