I find Wikipedia a great data base giving information which no other encyclopedia would give.
I do my bit when somebody tries to mutilate (not edit) an article by, for instance, deleting whole paragraphs or links just because he/she does not like it.
Diwali is a five-day Hindu festival of lights which symbolises the spiritual victory of light over darkness and good over evil. It commemorates the day when Hindu god Rama, along with his wife-consort Sita and brother Lakshmana, returned to his kingdom of Ayodhya after defeating demon-king Ravana and following 14 years of exile. Celebrations peak on the night of the third day of the festival—the main day of Diwali, which is today—marking the darkest night of the Hindu lunisolar calendar. People celebrate on this day by lighting traditional lamps (diyas) and candles. Pictured here is a woman lighting candles on Diwali.Photograph credit: AjoyDutta1997; edited by Aristeas