here is evidence directly refuting your assertion that art critical of Israel wouldn't stand a chance of being seen on college campuses- which by the way is as absurd a claim as any I've seen here.
"The Berkeley Art Center in collaboration with the Middle East Children's Alliance (MECA) presents "Justice Matters: Artists Consider Palestine." The exhibition presents a bold and controversial show of works created by fourteen Palestinian and American Artists. The artists address current contemporary issues of occupation and colonization within Palestine."
http://www.berkeleyartcenter.org/pages/exhibits_old.html#palestineAnd at Princeton:
"Three presentations this spring – an art exhibition, a poetry reading, and a display of historical books – have prompted campus debate about whether, and how, material that may be offensive to some should be displayed.
The concerns centered around a reading by poet Amiri Baraka, whose work has been viewed as anti-Semitic; a Woodrow Wilson School exhibition of artwork by Hunter College professor Juan Sanchez that was seen by some as disrespectful to Catholicism; and the inclusion of material considered racist in an exhibition of children’s books in Firestone Library. Professor Stanley Katz, director of Princeton’s Center for Arts and Cultural Policy Studies, noted that the three cases are very different: While Baraka’s work was known widely to spark protests, Katz said, the disputed materials in the art and library exhibitions were part of larger educational displays, which the organizers did not expect would be controversial or offensive."
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http://www.princeton.edu/~artspol/paw070203.htmlAnd one which I saw myself and was very powerful and very critical of Israel in my own dinky state of Vermont at the T.J. Wood Gallery at Vermont College: The link has photos of some of the art.
http://www.vtjp.org/exhibit/made_in_palestine.htmThese are just a tiny smattering of the art exhibits that contained art critical of Israel that took place on recently on U.S college campuses. Care to revise your statement?