Students hurled rocks through windows at a U.S. Embassy annex Friday after a night of sometimes violent anti-war protests that drew more than 200,000 Germans into the streets around the country.

U.S. diplomatic spokesman Anthony Sariti said there were no arrests. Police ordered 100 protesters, most of them teenagers, to move away from the building after they smashed two or three windows.Thursday night, several hundred radicals threw firebombs and rocks at riot police outside the building, the former U.S. Embassy in East Berlin that since unification has been converted into an annex of the Bonn embassy.

About 150 other people rallied Friday outside the heavily guarded U.S. culture center in downtown Berlin. Other protesters blockaded a highway through the center of town and still others marched in the fashionable Kurfuerstendamm shopping district.

The culture center was closed, as were schools for U.S. soldiers' children and other military-related facilities, because of fears that terrorists will launch attacks here to retaliate for the U.S.-led assault on Iraq.

Despite Chancellor Helmut Kohl's support for the U.S.-led coalition against Saddam Hussein, grass-roots opposition to the war has been growing. The deployment of 18 German warplanes to Turkey to guard against a possible attack by the Iraqis has engendered severe criticism.

Much of the anger has been directed against the United States. Protesters earlier smashed windows at an U.S. culture center in the northern port city of Kiel.