BEIRUT - Six Syrian government security personnel were killed by Druze gunmen in the south of the country, a monitor said on Saturday, after two car bomb blasts killed dozens of people overnight provoking angry protests.The two blasts, which occurred late on Friday, and ensuing violence killed a total of at least 37 people in and around the town of Sweida, a stronghold of Syria's Druze minority, the Britain-based Syrian Observatory for Human Rights told Reuters.A Druze leader was killed in one of the car bombs, the Observatory said.