Teach-In, Turn On, Walk Out The ins and outs of the antiwar movement. n the spring of 1968, antiwar activists protesting American military action in Indochina besieged Columbia University's historic Low Library, the massive, Romanesque space designed by McKim, Mead, and White which houses the offices of university administrators. Thirty-five years later, Low Library still contains the offices of university administrators. But today, antiwar activists are welcomed inside. Such was the case on Wednesday night, when hundreds of Columbia students braved long lines and rain for a chance to witness a faculty-led "teach-in" on the Iraq crisis. I was one...