The northern Indian city of Dehradun, located in the Himalayan foothills, was shaken by a violent incident weeks ago.
Brothers Anjel and Michael Chakma - students who had migrated more than 1,500 miles from the north-eastern state of Tripura for studies - had gone to a market on 9 December when they were confronted by a group of men, who allegedly abused them with racial slurs, their father Tarun Chakma told the BBC.
When the brothers protested, they were attacked. Michael Chakma was allegedly struck on the head with a metal bracelet, while Anjel Chakma suffered stab wounds. Michael has recovered but Anjel died 17 days later in hospital, he says.
Police in Uttarakhand state (whose capital is Dehradun) have arrested five people in connection with the incident, but they have denied that the attack was racially motivated - a claim that Chakma's family strongly disputes.
The incident, which has triggered protests in several cities, has put the spotlight on allegations of racism faced by people from India's north-eastern states when they move to larger cities for education or work. They say they are often mocked over their appearance, questioned about nationality and harassed in public spaces and workplaces.
