A sniper takes aim at group of men trying to carry an injured man in a deserted street in Deraa.
The video which could not be independently verified by Reuters comes as rebels are extending their control south towards Damascus.
But the government is not giving up the fight.
Neighborhoods where rebels once found safe haven have been leveled.
Rights groups say more than 100 people were killed across the country on Wednesday -- adding to a death toll of more than 40,000 people in a country where you often risk your life to cross the street.
Taking aim in Syria (0:47)
Dec. 19 - Violence rages across Syria amid reports that rebels are gaining ground in a fight that activists say has already cost more than 40,000 lives. Deborah Lutterbeck reports. ( Transcript )