A Justice Department probe has found the FBI improperly monitored activist groups and individuals between 2001 and 2006. The investigation covered FBI spying on the Thomas Merton Center, People for the Ethical Treatment of Animals, Greenpeace, The Catholic Worker, and a Quaker peace activist. The FBI was found to have opened and extended the monitoring despite lacking grounds to suspect unlawful activity. Some Greenpeace members were placed on a terrorism watch list after agents wrongly designated their nonviolent civil disobedience as “Acts of Terrorism.” In one case, FBI Director Robert Mueller was found to have provided Congress with false information in claiming a 2002 Pittsburgh antiwar rally was monitored because of intelligence that persons with links to international terrorism would be present. Investigators say Mueller’s false testimony was unintentional because he was wrongly informed.