The expression went viral in the 1960s: generation gap. Those in power had fought in World War II and were shocked to see college students in the US rebel against the call to serve their country and go to war. How much has the current movement on college campuses exposed a new generation gap? Will the consequences be as far-reaching? For the first time since the Vietnam War, Columbia University brought in police to break up a pro-Palestinian encampment, sparking further sit-in protests across the US.