Riot police face off with demonstrators at the 2008 Republican National Convention in St. Paul
Riot police face off with demonstrators as the police block a bridge into downtown St. Paul to keep protesters from getting close to the site at the 2008 Republican National Convention in Minnesota September 4, 2008. REUTERS/Damir Sagolj (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)