374865 04: (MAGAZINES PLEASE CALL) Protesters sit on the ground and lock arms causing a temporary standoff with Philadelphia Police during a protest in support of convicted cop killer Mumia Abu Jamal, Aug. 1, 2000 in Philadelphia on the second day of the Republican National Convention. Protesters committed various acts of civil disobedience, bringing traffic in Center City Philadelphia to a crawl for most of the afternoon. Over 300 people were arrested. (Photo by William Thomas Cain/Newsmakers)
