Nearly 200 chanting and singing anti-abortion demonstrators, part of a nationwide coalition known as Operation Rescue, were arrested outside California abortion clinics in Oakland, Fresno and Chico. About 100 people were seized in Fresno, with more than 80 arrested at the Feminist Women’s Health Center in Chico and seven arrests were reported at the Oakland clinic. There were also demonstrations at two Sacramento abortion clinics but no arrests were reported. Police also arrested about 150 members of Operation Rescue in Pittsburgh, Pa., and 125 in Milwaukee for blocking entrances to abortion clinics. Protests reportedly were building toward major nationwide anti-abortion demonstrations planned for Easter weekend, with Los Angeles a key target.