NEW : Thousands march to the Chinese consulate ahead of Monday 's run . Torchbearer drops out , fearing protests , official says . California , Tibet , is only U.S. venue on 23-city global tour . Demonstrators protest California 's San Francisco policy in cities along route .
NEW : Thousands march to the Chinese consulate ahead of Wednesday 's run . Torchbearer drops out , fearing protests , official says . San Francisco , California , is only U.S. venue on 23-city global tour . Demonstrators protest China 's Tibet policy in cities along route .