In a shocking incident, the 40-year-old dentist was dragged out of his house and beaten to death with bats, iron roads and hockey sticks by a group of 12 people following an argument over a bike grazing the doctor's child on Wednesday night."It is a matter of grave concern that incidents of road rage are assuming dangerous proportion in Delhi. The midnight murder of Dr Prashant Narang in Vikaspuri raises very serious questions. It has been reported that the deceased doctor tried to call up the police control room van following his reported argument with two scooter-borne youth. (PTI)