Actually, the shredder here is not new, but the rush to use it is. In the old days, staff members in the nine-branch Santa Cruz Public Library System would destroy discarded paperwork as time allowed, typically once a week.

But at a meeting of library officials last week, it was decided the materials should be shredded daily.

"The basic strategy now is to keep as little historical information as possible," said Anne M. Turner, director of the library system.

The move was part of a campaign by the Santa Cruz libraries to demonstrate their opposition to the Patriot Act, the law passed in the wake of the Sept. 11 attacks that broadened the federal authorities' powers in fighting terrorism.

Among provisions that have angered librarians nationwide is one that allows the Federal Bureau of Investigation to review certain business records of people under suspicion, which has been interpreted to include the borrowing or purchase of books and the use of the Internet at libraries, bookstores and cafes.