When we say corona today, most people think of a virus. In the 1970s, however, in some US states, the pronunciation of the word evoked completely different connotations. The surname Corona was worn by a serial killer. Originally Mexican Juan Corona killed twenty-five men. In 1971, when he was arrested, he became the worst killer in American history with that number of victims. Although this unflattering primacy was later taken away from him by other assassins, he is still one of the most brutal.