Tensions across colleges campuses in the US ratcheted up this week as police in riot gear moved in to break up pro-Palestinian encampments. Hundreds of demonstrators were arrested and scores of students have been suspended or threatened with disciplinary actions. Most of the tents are gone, but they left their mark. On the face of it, it was a very different scene in Irish universities this week. In the throes of exam season, bleary-eyed students at Trinity College Dublin pored over notes before heading in for end-of-year assessments. But once the exams were finished on Friday evening, dozens of students...