Protesters Converge on G20 (11 images)

Protesters regroup on Liberty Avenue in Pittsburgh, Pennsylvania before attempting to march in the G20 Summit site on September 24, 2009. Pittsburgh is the host city for the two day G20 Summit of world leaders. UPI /Archie Carpenter

A police lines forms on Penn Avenue to repel demonstrators outside of downtown Pittsburgh, Pennsylvania as they attempt to march to the location of the G20 summit in Pittsburgh, Pennsylvania on September 24, 2009. Pittsburgh is the host city for the two day G20 Conference. UPI /Archie Carpenter

Protesters rally in Arsenal Park, in the Lawrenceville area of Pittsburgh, Pennsylvania before attempting to march in the G20 Summit site on September 24, 2009. Pittsburgh is the host city for the two day G20 Summit of world leaders. UPI /Archie Carpenter

A small group of protester lock arms and stands in front of police lines on Liberty Avenue in Pittsburgh, Pennsylvania on September 24, 2009. Pittsburgh is the host city for the two day G20 Summit. UPI /Archie Carpenter