“This is terrorism. This is evil. There is no justification or rationalization for Hamas’ actions. These are barbaric acts of terrorism that must be called out by everyone,” the letter said.

Hamas began its attack on Israeli towns on Saturday and Israel’s public broadcaster Kan said the Israeli death toll had risen to more than 1,300. Most were civilians gunned down in their homes, on the streets or at a dance party. Scores of other people are being held captive in the Gaza Strip.

An Israeli bombing campaign in Gaza has killed more than 1,400 Palestinians, Gaza authorities said.

Gadot, the Israeli actor who shot to fame playing Wonder Woman, said she hoped the world remains steadfast in its support of the Israeli people. “My heart is aching for the lives lost and families shattered. I’m praying for everyone who has been affected by Hamas’ terrorism and brutality,” she said in the press release for the open letter.

Other notable names that signed the letter included actors Liev Schreiber, Chris Pine, Amy Schumer, Jamie Lee Curtis, writer and producer Ryan Murphy and director Antoine Fuqua.

The letter also urges people to remember “the horrific images that came out of Israel.”

Haim Saban, the producer and businessman behind the Power Rangers, said, “we in the Hollywood community and around the world must stand with Israel as it defends itself against a terrorist regime in Gaza that seeks Israel’s destruction.”