Mann's act was "unethical and disrespectful" towards Sikh holy book Guru Granth Sahib Ji, said Chairman of Punjab Khadi Board Rajwant Singh, who led the protest.
The protesters demanded action against Mann for allegedly attending a religious 'bhog' (post death ritual) of two Sikh youths killed in police firing during anti-desecration protests in Faridkot in an inebriated state.
Mann, in a post on Facebook, yesterday rejected the claim that he was drunk and alleged that he was pushed out of the venue by some people.