There are thousands of t-shirts, mugs, and memes of the now-iconic red-and-white “Keep Calm and Carry On” poster, and even more parodies of the phrase: “Keep Calm and Kill Zombies ...

“Keep Calm and Carry On”–suddenly ... Where did this bloody thing come from, and why has it become the meme of the moment? As one might expect, the sentiment–a steely resolve to remain ...