The release of this film was picketed by angry parents who were not happy to see Santa Claus depicted as an axe murderer. As a result, box office sales plummeted and the film was shelved for another year where it saw new light in an uncut video form (that has since gone out of print).
This film was planned to be a limited release but open wider by Christmas, but the protest canned the idea, and was pulled after two weeks of release.
To protest the film, critics Roger Ebert and Gene Siskel read the credits out loud on their television show saying, "shame, shame, shame" after each name.
This film was known as "Slayride" though out its production. Tri-Star decided to change the title to "Silent Night, Deadly Night" at the last minute.
The title "Slay Ride" actually ended up as a subplot in another film, the Disney holiday movie Ernest Saves Christmas (1988). In the Ernest film, the prospective Santa that Ernest was looking for was appearing in a horror film as a killer Santa in a film entitled "Slay Ride".
The toyshop where Billy gets his first job is called "IRA'S TOYS", Ira is the first name of one of the film's producers.