Candles illuminate grave sites at the San Gregorio cemetery during the Dia de los Muertos or Day of the Dead holiday on the outskirts of Mexico City, Tuesday Nov. 1, 2011. A tradition that coincides with All Saints Day and All Souls Day on Nov. 1 and 2., families take picnics to the cemeteries and decorate the graves of departed relatives with marigolds, candles and sugar skulls. (AP Photo/Marco Ugarte)

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