Wikipedia
Visaranai is a 2015 Indian Tamil-language docudrama crime- thriller film written and directed by Vetrimaaran based on the novel Lock Up by M. Chandrakumar. Featuring Dinesh, Anandhi and Aadukalam Murugadoss in the lead roles, the film deals with police brutality, corruption, and loss of innocence in the face of injustice.
The film premiered in the Orrizonti (Horizons) section of the 72nd Venice Film Festival, where it won the Amnesty International Italia Award. The film was released in India on 5 February 2016 and received highly positive reviews from both critics and audience alike. Many debates opened up regarding film in Tamil Nadu. At the 63rd National Film Awards, the film won three honours: Best Feature Film in Tamil, Best Supporting Actor for Samuthirakani and Best Editing for Kishore Te.