TJ Gnanavel on Rajinikanth’s ‘Vettaiyan’: Art is a tool, a weapon... but it all comes down to who’s wielding it

A day before the film’s release, filmmaker TJ Gnanavel talks about the Rajinikanth-Amitabh Bachchan starrer ‘Vettaiyan’, working with an ensemble cast, and why custodial torture is iniquitous