History buffs are a very, very opinionated bunch, and they certainly don’t mind getting into some online fisticuffs when it comes to subjects dear to their heart – whether that’s Hitler’s gastrointestinal problems or Henry VIII’s marital woes. We tapped into that passion for the TV channel Yesterday, producing bold, often controversial Facebook and Twitter posts designed to get shared and trigger lively/fiery/slightly scary debates. The results speak for themselves.