Why are Kurdish people being killed and no one listens- again?

The Syrian civil war is complex enough without the added complication of civil war(s) within the civil war.

Whether we can cope with the complexity or not, it is happening. A deadly new element is the Islamist Al Nusra killing Kurdish families in their villages of the north east of Syria. Tragically, there are many reports and photos of children and adult massacres. Some are calling it genocide. There are demonstrations by huge numbers of Kurdish people in Turkey, Germany, France and other counties. But is anyone listening? Is anything being done to stop the killings?