Chennai, July 29 -- A 27-year-old Dalit IT professional was killed allegedly by the brother of his girlfriend in the Tirunelveli district of Tamil Nadu in a suspected case of hate crime, police officers aware of the matter said on Monday, adding that they have arrested the 24-year-old accused. The incident took place on Sunday when the victim, Kavin Selva Ganesh, went to meet his girlfriend, S Subhashini, at the clinic where she worked. There, he ran into her brother and the main accused Surjit. An argument broke out between the two after which Surjit allegedly hacked Ganesh using a sickle, the officers added. "The victim and the accused's sister knew each other for a long time... The woman's family had objected to their relationship," said...