More than 100 celebrities, including musicians, actors, and authors have signed an open letter criticizing Israel's decision to designate six prominent Palestinian Human Rights groups as terrorist organizations.

The signatories include Hollywood stars Richard Gere, Claire Foy, Tilda Swinton and Susan Sarandon; director Ken Loach, musician Jarvis Cocker, the band Massive Attack, and authors Philip Pullman, Colm Tobin and Irvine Welsh, among others.

The joint letter described the recent move as an unprecedented and blanket attack on Palestinian human rights defenders.

It said that the designations target six of the most eminent Palestinian human rights defenders engaged in critical human rights work and cover all aspects of civil society in the Occupied Palestinian Territory.

 “Israel’s designation of these six Palestinian organizations as “terrorist” groups, and the military order that outlaws them places the safety of the organizations and their staff at imminent risk,” said the letter.

“The military order allows for Israeli occupation forces to raid their offices, forcibly shut them down, arbitrarily arrest their staff to be tried under Israeli military courts, and institute other reprisals including travel bans and residency revocations against their members. The threat of retaliation is real, and puts at risk not just the organizations themselves, but the entire Palestinian civil society and the tens of thousands of Palestinians they serve everyday,” it said.

They said that despite international condemnation by the UN, international human rights groups, and government officials, the Israeli occupation has doubled down in their crackdown and issued a military order that outlaws, entirely, the six Palestinian organizations in the West Bank.

“The vital work of these six organizations to protect and empower Palestinians and hold Israel accountable for its gross human rights violations and apartheid regime of institutionalized racial discrimination is precisely the work that Israel is trying to end,“ said the letter.

“To this end, we call on all persons of conscience across the globe to stand with us. We call on the international community to #StandWithThe6 and protect Palestinian human rights defenders, and demand that Israel rescind the terrorist designations immediately,” the letter concluded.