CHENNAI: A six-member gang hacked the son of a DMK functionary near Ennore in Chennai on Thursday morning.The murdered man has been identified as Kamaraj, 35. His father Vivekananda is a DMK functionary. The father-son duo had taken work from Chennai Corporation on a contract basis.On Thursday morning, the gang barged into their office and hacked Kamaraj to death.The gang members escaped from the spot...