Public fury has done little to diminish sex attacks in India's capital, with the number of reported rapes in Delhi more than doubling from last year.

And most rapes, police statistics show, are of children.

Incensed: Activists want juvenile justice laws changed after the sentencing of one of the rapists. Credit:AFP

On Tuesday, a judge will sentence the four surviving adult offenders who brutally gang-raped and murdered a 23-year-old student on a bus in south Delhi last December.

The woman was brutally assaulted for an hour before being thrown, naked and unconscious, from the moving vehicle onto the road. She died 13 days later in a Singapore hospital.