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Wednesday: Day in photos - Poland

School children play during the unveiling of memorial plaques showing the boundaries of the former Warsaw ghetto in the Polish capital in a new move to honor the memory of 450,000 Jews killed by the occupying Nazi Germans. Twenty-one commemorative plaques have been installed in key points around what during World War II was a 758-acre zone of terror in the heart of the city. Janek Skarzynki / AFP / Getty Images