That adds murder charges to the criminals. Apparently one of the rapist who was the most active in this crime was a juvenile. It might be the case the the protectors of these criminals are trying to put the maximum blame on this juvenile guy so that others escape easily and being a juvenile he too probably will be let off easily.

The whole incidence and exposed India's failure in multiple spheres. 1. Government has lost all it's credibility. 2. Police force is not being looked as protectors of law but mere goons in uniform. 3. Overall law enforcement has seen it's low in this case and many other cases.