Protesters march on Wilshire Blvd. during an anti-war rally in Los Angeles, California September 7, 2013. U.S. President Barack Obama appealed on Saturday to a dubious American public to back his bid to use military force in Syria while supporters scrambled to persuade lawmakers to authorize the move. Poster (C) with a portrait of Syrian President Bashar al-Assad reads, "Allah, Syria". REUTERS/Jonathan Alcorn (UNITED STATES - Tags: CIVIL UNREST POLITICS CONFLICT)