Walid, what you have reported is not accurate ! Canto-Sperber censored two events in the same year organized by the Collectif Palestine-ENS. The first one is a meeting with Stéphane Hessel, the second one is a series of conferences and debates as part of the international Israeli Apartheid Week.
Here is some information posted at the time by the Collectif Palestine-ENS :
The scandal which resulted from the ‘Hessel Case’ could have led one to think that the current governing body of the ENS would abandon its attempt to silence criticism of Israeli policies.
The Collectif Palestine-ENS, a group consisting of students and lecturers, wishes to continue its activities. In order to determine whether it is appropriate to refer to the Israelo-Palestinian situation as Apartheid, the group has set up a program comprising a series of conferences and debates as part of the international Israeli Apartheid Week, aimed at the ENS community. This program was submitted to the Director of the ENS, together with a request for a room and an open proposal to have discussions and reflections concerning the question of security, which according to the Director, had motivated the decision to ban the meeting within the establishment.
After two weeks of equivocation, the Director of the ENS finally announced her decision to refuse the proposal on 21st February, without even bothering to give a reason. In order to protest against this regime of exception [state of emergency? emergency rules?] to which it had been subjected within the establishment, and to defend its rights, the Collectif Palestine ENS decided to refer this matter to the Administrative Court on 24th February. On 26th February, the judge in chambers found the Collectif Palestine ENS to be right, making it clear that the complainants ‘are justified to argue that the Director of the ENS, by exercising her duties, has badly and illegally undermined the freedom of assembly, which is a form of fundamental liberty’.
Counteracted by the judge’s decisions, the Director is about to start an appeal to the Council of State asking to invalidate the orders of the judge in chambers. She has also made it clear to the Collectif that she still refused to allow them to hold their conference. In order to defend ourselves further, we now have to try and gather as much support as possible.
Over and above the question of Palestine, it appears important to us to react to the current ENS administration's censorship policy, which clashes very radically with the traditions of openness and engagement which have hitherto prevailed within its premises.
We therefore urge all the ENS community, as well as any citizen who values the fundamental principles of freedom of speech and assembly, to join the group supporting our initiative with the Administrative Court and the Council of State. A form is attached to this letter for this purpose. In return, we commit ourselves to keep you informed of the process with the governing bodies and the court.