Yea, they don't matter for a civilised country/society. But for a country like India, these things/questions do matter. If the guy was an Assamese Muslim, people in Assam would view this barbaric act differently versus people of other states. If the guy was a Muslim from some other state then people of India(Assam + rest of India) would view it bit differently. And if the guy was some so called illegal migrant from Bangladesh then entire country would view this act completely differently. I am guessing, it's the third scenario in this case. Ofcourse, whatever be the case, it should have been handled in a civilised way but like I said, India is not even a civilised country to begin with, hence the different scenarios.