Halla Bol (English: Raise Your Voice) is a Hindi film released on 11 January 2008, and directed by Rajkumar Santoshi, whose earlier films include The Legend of Bhagat Singh (2002) and Khakee (2004). Halla Bol stars Ajay Devgan and Vidya Balan in pivotal roles and a number of famous celebrities from the Hindi film industry appear as themselves. Produced by Samee Siddiqui, the film's score and soundtrack was composed by Sukhwinder Singh, while Nataraja Subramanian and Steven Bernard were the cinematographer and editor respectively.
The film touches upon many issues that have come into the public eye in India lately, such as the Jessica Lall murder case, Aamir Khan's involvement with the Narmada Bachao Andolan, the Right to Information Act, and public participation in fighting corruption. It also references the theatre group Jan Natya Manch, whose leader, theater activist Safdar Hashmi, was killed by political rivals while performing a street play by the same name, Halla Bol!, in 1989.