Film has the capability to change the way we think about ourselves and our civilization. Documentarian and TED Fellow Sharmeen Obaid-Chinoy uses it to fight violence against women, turning her camera to the custom of honour killings in Pakistan. At a stirring talk, she shares how she shot her Oscar-winning film on the road in a mobile cinema, visiting small towns and villages throughout Pakistan — and shifting the dynamics between women, men and society, one screening at a time.