MANILA — The posters that appeared on campus were chilling.... Some students were even named as possible offenders.No one knew where the posters had come from, but they were found on many of the university’s various campuses across the country over the past few weeks, according to students and university activists.... Professors and students can now be held on mere suspicion. About 200 students gathered at the university in Manila’s northern suburb of Quezon City to protest the announcement...