About 1,000 protesters threw rocks and bottles at the Japanese Embassy on Saturday after a noisy march demanding a boycott of Japanese goods to oppose new textbooks that critics say gloss over Tokyo's wartime atrocities. Protesters shouted "Boycott Japan!" as hundreds of police, some with riot helmets and shields, formed a human wall to keep the crowd away from the embassy. Protesters smashed the windows of a guardhouse outside the fenced compound. The protesters marched to the embassy after a rally by more than 6,000 people in the Chinese capital's northwest university district, where some burned a Japanese flag. Waving Chinese flags and singing the national anthem, marchers carried signs saying "Protest new Japanese textbooks," a reference to schoolbooks that critics say whitewash wartime aggression against China. Spectators also called for the rejection of Tokyo's campaign for a permanent seat on the U.N. Security Council _ a status held now by only China, the United States, Russia, Britain and France.