What is funny, though, is that for the two years before ISIS took over, Syria's regime has put the camp under siege. Over 128 have starved to death as of last May, far more than have been killed by ISIS. Over 150,000 residents have fled the Syrian bombing campaign there. And even after the takeover, Assad's regime has been dropping barrel bombs on the camp.
The only reason there is even a little interest in Yarmouk now is because of ISIS, not because of the victims.
There was also a story today, not verified, that 120 Palestinian kids between 12-15 were kidnapped in Mosul recently. I see no keen interest by anyone to track this down.