Four men convicted of a notorious gang rape in New Delhi will be hanged to death, after India's Supreme Court rejected their appeals over the 2012 crime that drew worldwide attention and prompted mass demonstrations and calls to stop the harassment of women — calls that the court repeated today.The Supreme Court upheld the sentences over what it described as "the brutal, barbaric and diabolic nature of the crime," in which a 23-year-old woman, a physiotherapy student, was attacked and her boyfriend beaten after they boarded a bus. The woman was gang raped as the bus drove through New Delhi, and she and her boyfriend were later thrown off the bus, naked. Nearly two weeks later, the woman died.The crime was met with shock — and with new public discussions in India about the way women are treated and about an increase in crimes that target them."The demonstrations demanding justice for the victim reflect not only the public revulsion at the brutality of her attack, but also the simmering rage over the prevalence of sexual violence in India," NPR's Julie McCarthy reported in 2012. "There were some 228,000 crimes last year against women, up from the year before."The four men were sentenced to death in September 2013, months after a fifth man who was accused in the case was found dead, hanging in his jail cell. In all, the authorities blamed six people for the crime; a juvenile was given the maximum three-year sentence for someone his age (and has since been released).In the Supreme Court's nearly 430-page ruling, its lone female justice urged India to do more to sensitize the public to attacks on women and to make gender equality a priority.That justice, R. Banumathi, also revisited elements of the case that she said affirmed the "rarest of rare" classification that demands the death penalty. She wrote: