Pittsburgh Cops Fire Pepper Spray at Protesters
By John Johnson,  Newser Staff
Posted Sep 24, 2009 3:01 PM CDT
Pittsburgh police in riot gear redeploy after confrontations with protesters.   (AP Photo/Jacqueline Larma)
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(Newser) – Protests in Pittsburgh are getting into full swing as Barack Obama and other world leaders arrive for the G-20 summit. Police fired pepper spray and smoke bombs to break up an unauthorized march of about 500 anarchists heading toward downtown, reports the Post-Gazette. Its live blog of the march says some protesters threw rocks at police, and at least one person was arrested. The G-20 summit gets under way tonight and wraps up tomorrow.