Abstract: No one can ignore them anymore. Santa Claus killers are now legion, from comics to movies, TV series, songs, video games and memes from the Web. How could we have come to this total reversal of the jovial symbolism of this chubby old elf who covers us with gifts? And how has this somewhat improbable figure managed to impose itself in the various corners of pop culture? This is what we will try to solve in this investigation in the country of «Psycho Santas».