Here's an excellent background on why the Palestinian territories are so messed up:
When the shooting was over, 10 Fatah members were dead, with a similar number wounded.
Suddenly aware that their unprovoked massacre may have gone too far, Hamas claimed it was Israel who had actually killed the Fatah people and threatened any journalist who dared report otherwise. [Ed.:—Where are the editors who are supposed to recognize this misinformation for what it is? Asleep at the wheel, apparently...]
Then, in a truly perverse twist, Hamas launched more than 20 rockets at the Israeli town of Sderot "to take revenge" for the massacre they themselves had committed.
Given the overwhelming evidence and eyewitness accounts of those who were there, it was clear to most Palestinians that Hamas had committed the massacre. Still, when trying to explain the cause of the current infighting, several Palestinians, including Musa Abu Marzouk, deputy head of Hamas' political bureau, insisted that Israel was somehow to blame.
This is the real Palestinian Naqba, the disaster at the root of Palestinian suffering since even before 1948.
Instead of taking responsibility for their role in shaping their destiny, on virtually every occasion, the Palestinians have twisted their worldview to put the blame solely on Israel.
There is no self-awareness, not to mention self-criticism. No sense of accountability.