All those Palestinian homes are rebuilt by the UN using UN funds, the UNWRA allows UN ambulances to be used by terrorists (not the recent case, but the prior ones where the Reuters crew filmed balaclava clad kalashnikov wielding men using an ambulance to shoot from during an action in gaza), then you have Hansen having no problem employing Hamas members and using them, the fact that half of the emergency meetings of the security council are called whenever Israel makes a move in self defence, the disproportionate condemnation that Israel recieves over its actions, the one nation in the Middle East that actually takes care for human rights is the only one that ever gets attacked for its record, the Palestinians being given special representation at the UN as a reward for terrorism - you do not see a Kurdistan representative or a Tibetan one, the UN consistently validating Palestinian terror by not condemning it outright - rather using a terror attack as a way to blame Israel for inciting it.
The PLO Arabs are leftover from mandate times who decided to listen to Nassr and his promises of driving the Jews into the sea. They have used terrorism as their diplomacy for decades as it has worked - the path of their nationhood is paid with innocent blood.
The UN has a consistent record of ambivalence towards Israel at best and outright loathing at worst. The organization betrays its noble foundation and is dedicated to upholding the rights of dictators and the status quo. As I said the UN is the best organization of its kind ever - an arena for third world dictators to hit above there belt.