.IF COLUMBIA UNIVERSITY'S head of state, Minouche Shafik, assumed that pro-Palestinian presentations will subside after she consulted New York City cops on April 18th, she was wrong. The camping tents are back and protesters are emboldened: in the early hours of April 30th they filled an educational institution property, blocked its doors and also curtained a banner reading "intifada" from its front view. Given that the beginning of the war in Gaza there have been protests at educational institutions throughout The United States and, at many of them, arrests. Trainees mention, often rightly and occasionally incorrectly, that they are actually exercising their free-speech legal rights. What policies control protest and speech on school?