Megastar Amitabh Bachchan called the incident, involving a 17-year-old student, "horrid" but also questioned those who filmed the incident.
"Horrid visuals on TV of molestation of young girl... But just a point. How does TV crew know of it live and why don't they intervene?,"Bachchan posted on twitter.
Actress Bipasha Basu said, "Guwahati molestation of a 17-year-old girl for 29 minutes on the road! Shameful! These monsters have to be punished!."
Filmmaker Shekhar Kapur said, "As a society we must take collective responsibility for Guwahati for making incidents like this acceptable and rampant. Constant bombarding of female image as mere object of sexual titillation is bound to alter perception of the immature male."
Actor Rahul Bose said he was sickened by the incident.
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"Saddened to the point of despair that none came to her rescue. How much more violence against women must we see before we realise it will end civilisation as we know it. What makes men silent onlookers to such carnage? what delight in seeing a 17-year-old girl brutalised?."
"My country gives me millions of reasons to be a proud Indian. But it also makes me feel ashamed to be one on many occasions," actor Anupam Kher said.
Actor-director Farhan Akhtar said, "Guwahati pathetic! Shameful! Indian women better realise that they are on their own."