Maryam Alwan figured the worst was over after New York City police in riot gear arrested her and other protesters on the Columbia University campus, loaded them onto buses and held them in custody for hours. The students' plight has become a central part of protests, with students and a growing number of faculty demanding their amnesty. At issue is whether universities and law enforcement will clear the charges and withhold other consequences, or whether the suspensions and legal records will follow students into their adult lives.