The brutalising of a young girl in Delhi has rightly sparked national outrage. But while demanding tougher laws and better policing is crucial, fighting sexual violence poses complex challenges. Through a series of ground reports from Delhi, Kolkata, Lucknow, Mumbai, and as far afield as London and New York, our team of NDTV reporters tackle key questions: from why some cities like Delhi are more unsafe than others, why getting justice for victims of sexual violence remains a nightmare, why much of the social apparatus to fight rape excludes men, and what is the pathology that led the men on board the bus to commit an act of such brutality.