A woman keeps vigil at the grave of a relative in the San Gregorio cemetery during the Day of the Dead holiday on the outskirts of Mexico City, Friday, Nov. 1, 2013. 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)