NEW : Students march to the Chinese consulate ahead of Wednesday 's run . Torchbearer drops out , fearing protests , he says . The run is the only U.S. appearance for the flame , wrapping up the first week of a 23-city global tour . San Francisco , California , is only one stop on 23-city global tour . Demonstrators protest China 's Tibet policy in cities along route .
NEW : Students march to the Chinese consulate ahead of Wednesday 's run . Torchbearer drops out , fearing protests , he says . San Francisco , California , is only one stop on 23-city global tour . Demonstrators protest China 's Tibet policy in cities along route .