Protestors hold up a placard reading "I am HIV +" outside the White House during AIDS Parade in Washington D.C., capital of the United States, July 24, 2012. Thousands of people gathered around the Washington Convention Center where the 19th International AIDS Conference is convened and walked to the White House, asking the U.S. government for more attention to AIDS medical care and elimination of the discrimination against HIV Positives. [Xinhua]