In 1968, parent-run organizations, particularly Action for Children's Television (ACT), began protesting what they perceived as excessive violence in Saturday-morning cartoons. Most of these shows were Hanna-Barbera action cartoons such as "Space Ghost", "The Herculoids", and "Birdman and the Galaxy Trio", and virtually all of them were canceled by 1969 because of pressure from the parent groups. Members of these watch groups served as advisers to Hanna-Barbera and other animation studios to ensure that new programs would be safe for children.