Bollywood stars Swara Bhaskar, Kalki Koechlin, Twinkle Khanna, Rajkummar Rao, Akshay Kumar, Helen and Kiran Rao, along with thousands of Mumbaikars, gathered on Sunday for a peaceful protest against the rape and murder of an eight-year-old girl in Kathua in Jammu and Kashmir, and the sexual assault of another girl in Unnao in Uttar Pradesh.