A decade ago, Watchmen was a singular entity and it was easy enough to identify the most violent moments. Today, the Watchmen Universe contains not only the original, seminal work, but also Before Watchmen and the Geoff Johns/Gary Frank DCU crossover Doomsday Clock.
In other words, there’s more than one series to search through for the most gory Watchmen moments now, and there are plenty to choose from. Doomsday Clock, especially, introduced new and brutal characters like the incredibly violent Marionette. It's easy to hate some of these nasty individuals considering some of them eliminate our beloved Minutemen, and the reader knows these heroes won't be resurrected.
When Watchmen released in 1986, written by Alan Moore and illustrated by Dave Gibbons, it changed the medium of comic books forever, and its impact continues to be felt to this day. Over the years, Moore has officially cut all ties with DC Comics, and demanded he be referred to only as “The Original Writer” in all modern Watchmen spinoffs. Though he may reject the notion, his characters continue to be relatable and interesting more than three decades after they were created.