Indian youth is a fiery political force of change, said filmmaker Shekhar Kapur, impressed with the way youngsters have been protesting to demand speedy justice for a Delhi gang-rape victim.

"Indian youth have proved they are not just demographic statistics in economic models. They are a potent and fiery political force of change," Kapur tweeted Sunday.

Thousands have been protesting in the national capital since Tuesday demanding justice for the 23-year-old who was gang-raped in a bus Dec 16.