F.B.I. Scrutinizes Antiwar Rallies By ERIC LICHTBLAU, NYTimes

The Federal Bureau of Investigation has collected extensive information on the tactics, training and organization of antiwar demonstrators and has advised local law enforcement officials to report any suspicious activity at protests to its counterterrorism squads, according to interviews and a confidential bureau memorandum. …

”The F.B.I. is dangerously targeting Americans who are engaged in nothing more than lawful protest and dissent,” said Anthony Romero, executive director of the American Civil Liberties Union. “The line between terrorism and legitimate civil disobedience is blurred, and I have a serious concern about whether we’re going back to the days of Hoover.” …

Herman Schwartz, a constitutional law professor, says, “As a matter of principle, it has a very serious chilling effect on peaceful demonstration. If you go around telling people, `We’re going to ferret out information on demonstrations,’ that deters people. People don’t want their names and pictures in F.B.I. files.” …

The abuses of the Hoover era, which included efforts by the F.B.I. to harass and discredit Hoover’s political enemies under a program known as Cointelpro, led to tight restrictions on F.B.I. investigations of political activities.

Those restrictions were relaxed significantly last year, when Attorney General John Ashcroft issued guidelines giving agents authority to attend political rallies, mosques and any event “open to the public.”