Yes, Lethal Weapon 2 is a Christmas movie, as it takes place during the holiday season. The film follows the adventures of Detective Martin Riggs (Mel Gibson) and Detective Roger Murtaugh (Danny Glover), who are investigating a case involving a criminal organization operating out of South Africa. As they get closer to the truth, they encounter various festive elements, such as Christmas lights, decorations, and music. Additionally, the film ends with a touching scene that takes place during Christmas, making it a perfect Christmas movie.