A protester punches a security guard in a brief clash during a lightning rally outside the U.S. embassy to mark Filipino-American Friendship Day in Manila July 4, 2010. Dozens of student protesters called on President Benigno "Noynoy" Aquino to reject the visiting forces agreement (VFA) and what they see as U.S. intervention in Philippine affairs. REUTERS/Cheryl Ravelo (PHILIPPINES - Tags: POLITICS CIVIL UNREST)