What is Diwali, the Indian festival of lights?

FILE - Sikhs pray inside the Golden Temple, Sikhs' holy shrine, decorated with lights on the occasion of "Diwali," a festival of lights, in Amritsar, India, Friday, Oct. 24, 2003. (AP Photo/Aman Sharma)
(RNS) — Diwali is one of the most celebrated holidays in India and has become increasingly significant in the Indian-American diaspora.