In a letter to Interior Minister Eli Yishai on Tuesday, they accused the ministry of harming democracy and academic freedoms.

The letter says: “Blocking someone whose opinions are not accepted is a mortal blow to democracy.” Signatories included faculty and students, linguists and philosophers.

The 81-year-old Chomsky, an outspoken critic of Israel, was to speak at a West Bank university last week when Israeli authorities barred him from entering from neighboring Jordan.

The Interior Ministry later said the border agent had made a mistake and Chomsky was welcome to return.