The massacre of civilians by Syrian rebels in Az-Zarah

I have not read about this in Western media.  The massacre of women and children in Az-Zarah and the selfies taken by Syrian rebels with dead corpses of women and children.  They were so widely circulated that when people protested some rebels had to go back and claim that women were armed when the pictures don't show that at all.  I doubt that Western human rights organizations will take note of this. These are their rebels after all.  If the very director of Human Rights Watch is criticizing Obama for being too negative about Al-Qa`idah in Syria, what do you expect of the rest?