By Jayson Campadonia, KABC
Joker is an R-rated flick which follows the story of how the man behind the makeup becomes the comic book super villain. Critics say the movie glamorizes the life of a mass murderer, but the movie studio says the film is not an endorsement of real-world violence. Friends and family of those killed in the 20-12 mass shooting at a Colorado movie theater in which the shooter was compared to the Joker, are now calling on the studio to get involved in the anti-gun movement.