Amplify the ill of the powerful as means to create some sort of (false) balance of injury. By any rational measure the depredations/deaths/detainments/humilations suffer by the Palestinians dwarf those inflicted by Palestinians. It's the same way with the US and other in Afganistan and Iraq, only in the Israel case it's been going on for decades. As such the "obsssion" has become more of a mass pathological disorder whereby Israeli are largely completely insensitive to Palestinian suffering.
Erekat: Israel's isolation is causing it to act belligerently (Haaretz)
from the article: MESS Report / Understanding Israel's national obsession with Shalit