FILE - Mark Rudd, a leader of the student protest at Columbia University in New York City, is interviewed outside Low Memorial Library, background, April 25, 1968, which has been occupied by students since the previous day. Rudd said the purpose of the protest was to "hit at" what he claimed was the university's policy of "racism and support for imperialism." (AP Photo/File) NEW YORK – College students taking up space and making demands for change. University administrators facing pressure to get things back under control. Police brought in to make arrests. At other schools: students taking note, and sometimes...