Maybe it's post-traumatic stress disorder from all those years of occupation and war.

Violence Erupts Between Fatah and Hamas
By STEVEN ERLANGER

JERUSALEM, June 12 — Hundreds of Palestinian security personnel loyal to the Palestinian leader, Mahmoud Abbas, went on a rampage Monday night in the West Bank town of Ramallah, attacking the parliament and cabinet buildings controlled by his rivals in the Hamas-led government.

The attack by forces from the Fatah faction loyal to Mr. Abbas, who fired bullets at the buildings and set them on fire, came after Hamas gunmen attacked the Gaza headquarters of the Fatah-dominated security forces with rockets and grenades.

The Ramallah buildings were not occupied at the time, but the fire gutted a floor of one of the two cabinet buildings after the security forces, joined by gunmen from Al Aksa Martyrs Brigades, part of the Fatah movement, shot out the windows of the parliament building and tried to prevent firefighters from entering the area.

In the growing violence between the major Palestinian factions, at least 2 people were killed and 15 wounded in the fighting in Gaza. In Ramallah, a member of the security forces told The Associated Press, "Every time they touch one of ours in Gaza, we will get 10 of theirs in the West Bank."