Dussera Festival:

The Dussera Festival celebrates the killing of the ten headed demon king Ravana by Lord Rama and the Goddess Durga's victory over demons.  Why the fuss? Ravana kidnapped Sita, the wife of Rama (who is one of the incarnations of the god Vishnu). Rama and his brother, along with Hanuman the monkey god and his monkey army made their way to Lanka to save Sita. How is this linked to the goddess Dugra? Rama asked Durga for the way to kill Ravana. Long story short: Ravana was killed and Sita was saved. 

The festival is celebrated by much fanfare and the burning of effigies to personify the killing of Ravana by Rama. There are lively processions with drums, Bollywood music and dancing in the streets during which marigolds are thrown enthusiastically at the crowds. The night ends with fireworks, the acting out of the killing and the burning of the effigies of Ravana.