As the two-week standoff between pro-Palestinian protesters and college administrators at Columbia University in New York came to a head Tuesday, officials anxiously monitored whether the fallout would spark more protests on college campuses around the country or quell what has been a growing movement. Protesters at Columbia appeared to be digging in, taking over an academic building that has a history of being occupied by student protesters going back nearly 60 years to the Civil Rights Movement and Vietnam War. The escalation came after the passage of a Monday deadline issued by the university’s administration for protesters to leave...