If you caught a glimpse of Mexico’s “Generation Z” march last November, you might have wondered why so many people were hoisting flags depicting a cartoonish skull and crossbones wearing a yellow hat — and just what that had to do with the Morena government of President Claudia Sheinbaum, currently standing at around a 70% favorability rating. You might also be deeply confused as to why former president Vicente Fox was there, wearing the same yellow-capped Jolly Roger on a black T-shirt along with a baseball hat and jeans.

It could also be the case that you haven’t picked up a Japanese comic book in the last three decades, which may or may not be any kind of problem in your life.

The Straw Hat Pirates’ Jolly Roger is taken from One Piece, Eiichiro Oda’s long-running Japanese comic book, which, since its creation in 1997, has sold a staggering 578 million copies, making Oda one of the best-selling authors of our age in any medium. One Piece has since evolved, like Harry Potter or Star Wars, into a full-fledged media empire. Since 1999, there’s been a whopping 1,100 episodes of an animated version. There’s also a live-action Netflix series running strong.