.IF COLUMBIA UNIVERSITY'S head of state, Minouche Shafik, thought that pro-Palestinian exhibitions would diminish after she called New york city Urban area police on April 18th, she was wrong. The camping tents are actually back and also protesters are emboldened: in the early hrs of April 30th they filled an university building, barred its doors and curtained a flag reading "intifada" coming from its own front view. Considering that the begin of the battle in Gaza there have been actually demonstrations at educational institutions all over United States and, at many of them, detentions. Pupils point out, in some cases appropriately and also in some cases wrongly, that they are exercising their free-speech civil liberties. What policies control demonstration and also speech on school?