The Olympic torch arrived in San Francisco, its only stop in the United States, amid heavy security on Tuesday.
Activists, angry about China's policies in Tibet and crackdown in the Himalayan region after deadly rioting last month, have promised more demonstrations similar to those in the London and Paris legs on Sunday and Monday.
The Olympic flame will pass through San Francisco later on Wednesday.
Image: A protestor chants anti-China slogans at a pro-Tibet rally on Tuesday in San Francisco.
Photographs : Robyn Beck/AFP/Getty Images
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