Nearly 40 years ago, the FBI was roundly criticized for investigating Americans without evidence [that] they had broken any laws. Now, critics fear the FBI may be gearing up to do it again. Tentative Justice Department guidelines, to be released later this summer, would let agents investigate people whose backgrounds -- and potentially their race or ethnicity -- match the traits of terrorists. Such profiling ... echoes the FBI's now-defunct COINTELPRO, an operation under Director J. Edgar Hoover in the 1950s and 1960s to monitor and disrupt groups with communist and socialist ties. Before it was shut down in 1971, the domestic spying operation -- formally known as Counterintelligence Programs -- had expanded to include civil rights groups, anti-war activists, ... state legislators and journalists. Among the FBI's targets were Martin Luther King Jr., Malcolm X, and John Lennon, along with members of black [political] groups ... and student protesters. The new proposal to allow investigations of Americans with no evidence of wrongdoing is COINTELPRO for the 21st century," said Barry Steinhardt of the American Civil Liberties Union. "But this is much more insidious because it could involve more people. In the days of COINTELPRO, they were watching only a few people. Now they could be watching everyone."