Today in Pictures: Oct. 24, 2012

A flower lays on the memorial to the estimated half million Roma and Sinti murdered by the Nazis during World War II, in Berlin, Oct. 24, 2012 during an unveiling ceremony. Historians estimate nearly 500,000 Roma men, women and children across Europe were killed between 1933 and 1945, decimating a population with roots in Germany dating back six centuries. (John Macdougall/AFP/Getty Images)