From President Bush's address to AIPAC (President Speaks to the American Israel Public Affairs Committee), Washington, D.C., Tuesday, May 18, 2004:

The Israeli people have always had enemies at their borders and terrorists close at hand. Again and again, Israel has defended itself with skill and heroism. And as a result of the courage of the Israeli people, Israel has earned the respect of the American people. (Applause.)

The very next day, from "Explosion rips through crowd of Palestinian demonstrators, killing at least 10", San Francisco Chronicle, Wednesday, May 19, 2004:

An Israeli missile and four tank shells ripped through a large crowd of Palestinians demonstrating Wednesday against the Israeli invasion of a neighboring refugee camp, killing at least 10 Palestinians. Hospital officials said all the victims were children and teenagers.

Israel's military acknowledged that soldiers fired four tank shells, a missile and machine guns to stop 3,000 Palestinian demonstrators it said were heading toward a battle zone in the Gaza Strip.

"There were armed men in the midst of the demonstration," Brig. Gen. Ruth Yaron, the army spokeswoman, told Israel TV's Channel One.

For what it's worth, there are some additional reports indicating that some of the demonstrators and protesters were throwing rocks, which I guess makes the whole "missiles" and "tank shells" response fair enough.