There is a movie called Code 8 (2019). I watched it thoroughly and I can not understand where the movie's name comes from.
What does "Code 8" refer to?
Movies & TV Stack Exchange is a question and answer site for movie and TV enthusiasts. It only takes a minute to sign up.Sign up to join this community
The movie you saw was based on a short film released in 2016, also called Code 8 (2016). In this movie, one mutant (for lack of a better term, we go with Marvel Comics' definition) throws a brick through a car window and he and a fellow mutant are then hunted by police for committing a "possible Code 8". In the ensuing confrontation with police, one mutant clearly uses his powers to injure an officer. At that point, the police broadcast that "a Code 8 has been committed".
It can therefore be inferred that Code 8 is the "police code" for a mutant using his powers to commit a crime.