THE STREETS OF GAZA were packed with thousands of joyous revelers on Thursday following the terrorist attack at a Jerusalem rabbinical seminary that killed eight people. In mosques throughout Gaza, according to news reports, many residents went to perform the prayers of thanksgiving. Armed men fired machine gun bursts into the air in celebration. Others passed out candies to random passersby on the streets.

This is not the first time that large numbers of Palestinians have celebrated bloodshed.