Festivals, in and of themselves, are not evil. Becoming intoxicated, or using a festival as a reason to act inappropriately (being disorderly, etc) is not wise or skilful.
Diwali, the Festival of Lights, is the Hindu festival that celebrates the triumph of good over evil.
clensing of evil spirits from the devil
Evil I - 2000 was released on: USA: 11 August 2000 (Siggraph Film Festival)
Where Evil Dwells - 1985 was released on: USA: 1985 (New York Film Festival)
The Evil Within - 2003 I is rated/received certificates of: Australia:PG (film festival rating)
because it is where light won over evil
The Evil Eyes - 2011 was released on: USA: 15 October 2011 (New York Film Festival) USA: 1 April 2012 (Ann Arbor Film Festival)
Taste of Evil - 2006 was released on: USA: 29 October 2006 (Virginia Film Festival)
Route of All Evil - 2008 was released on: USA: 4 October 2008 (Ozone Film Festival) USA: 16 November 2008 (Big Easy Shorts Festival)
Festival of Kukeri at Pernik, for removal of evil spirits
The Evil Cleric - 1994 was released on: Canada: 20 July 1994 (Vancouver Queer Film and Video Festival) USA: 21 February 2004 (Big Sky Documentary Film Festival)
Evil Deeds - 2007 was released on: USA: 31 October 2007 (Final Cut Film Festival)