WASHINGTON (AP).- A liberal group is calling for Smithsonian Secretary Wayne Clough to step down, and the board of the Smithsonian’s Hirshhorn Museum is complaining that Clough bowed to political pressure in removing a video from an exhibit. Clough became the target of a censorship debate after he removed a video depicting ants crawling on a crucifix from the National Portrait Gallery exhibit, “Hide/Seek,” after a Catholic group complained. Michael Keegan, president of People for the American Way, called Friday for Clough to be removed when the Smithsonian Board of Regents meets Monday. The Hirshhorn Museum board also issued an open letter saying that bowing to pressure harms the Smithsonian’s integrity. The group Art Positive plans to protest at the Smithsonian on Monday.