The thought of skeletons dancing in the street may seem scary. But in Mexico, skeleton parades are part of a joyous holiday. It’s called Día de los Muertos, or Day of the Dead. The celebration begins the night of October 31 and ends November 2. Many people believe the spirits of their dead relatives visit during this time. To honor the dead, people set up altars in their homes and decorate them with candles and photos. They also leave flowers at the gravesites of loved ones.