Mayerthorpe, also known as Menace or To Serve and Protect: Tragedy at Mayerthorpe, is a Canadian dramatic television film which was directed by Ken Girotti and broadcast by CTV in 2008. The film is a dramatization of the Mayerthorpe tragedy of 2005, in which four Royal Canadian Mounted Police officers were shot and killed while executing a search warrant against an illegal marijuana growing operation on the Mayerthorpe, Alberta, farm of James Roszko.