In the square by the Arts block in Trinity College on Friday tourists queued in the sunshine for entry to the Book of Kells, and students sat in groups on the lawn winding down for the weekend or taking breaks from the library. They are in the thick of it now, end of year exams began this week. Student leaders like László Molnárfi and Quinn Katz-Zogby have been closely watching the scenes unfolding on venerable campuses just like theirs across the US and now elsewhere too, where students - first at Columbia University - have set up encampments demanding that...