On April 23, 1968, student protesters began what would become an eight-day occupation of five university buildings and the president’s office. Students were protesting the university’s affiliation with the Institute for Defense Analyses and its plans to construct a new gymnasium in Morningside Park that had one entrance for Columbia students and faculty and another entrance for members of the neighboring West Harlem community, who would not have access to all of the facilities. Kirk initially agreed to address some of the protesters demands, but ultimately filed trespass charges against them and called in police to clear the occupied buildings. After the incident, Kirk resisted calls for his resignation, but stayed away from graduation and eventually announced his retirement before the start of the next academic year. In 1974, a newly-constructed gymnasium finally opened.