Why the need to identify the Hathras rape victim as Dalit?

To understand why in cases of rape against Dalits and Adivasis mentioning the caste and tribal identity is important, you need to take into account the fact that Dalits and Adivasis have been and are the most vulnerable population of the society — vulnerable to hate crimes and the most likely ones to face impediments to seeking justice as most of the people in charge of safeguarding rights and ensuring justice are caste Hindus or non-ST/SCs who have adapted to the idea of caste hierarchy.