Israel is a small country with only a fiftieth of the population of the United States. To put it in perspective, these 259 killed are equivalent to about 13,000 people being killed in the United States in such criminal attacks. And that is not all. Hundreds of people were killed. All of these terror acts are specifically authorized by Yasser Arafat.
Any pretext suffices.
But that has not happened. The PLO has not even complied with the promise to amend their infamous Charter, which explicitly calls for the destruction of the State of Israel. Any pretext to violence suffices. Not too long ago, it was the opening of an entrance to an archaeological tunnel that offended the sensitivities of the Palestinian Arabs. Next it was the Israeli Jews constructing residences in the eastern part of Jerusalem on land they own.