I think this has been blown way out of proportion by the media. For the record, I am not Jewish, and my Jewish friends at Wellesley are non-practicing and not terribly opinionated on the topic of Israel. IMO the firing of the Hillel staff was ill-timed, and was handled extremely insensitively. From what I understand, it is a budgetary issue, but honestly don’t know why they did it mid-semester.
As far as the poster goes, I believe you are referring to an area by an entrance to the Lulu Student Center (the cafeteria is upstairs). Students can hang (approved) posters there to advertise upcoming events, club info, etc. From time to time, someone will hang a big posterboard and pose a question to encourage students to write-in comments on topics ranging from “Should The Sleepwalker Statue be Removed” to the recent “What does Zionism Mean to You?” That poster clearly stated that anti-Semitic comments would not be tolerated.
As in the past, some of the comments were quite serious, some were quite silly, and there was some back-and-forth between students writing comments. Last year, there were some comical, disparaging comments re: the Sleepwalker’s physique, followed by remarks requesting sensitivity because those comments might be upsetting to our trans-sibs. I think the point is to encourage debate (and to have a little fun perhaps, via satire?).