Throughout the last week of April, the black students occupying Hamilton developed an organized, tight-knit, and disciplined community, one that differed sharply from the more boisterous atmosphere of other occupied buildings such as Mathematics. To the administration, however, the black-occupied building appeared a time bomb; Kirk, Truman and the trustees feared that the forcible removal of the SAS students in Hamilton would generate a violent reaction from the nearby Harlem community. This fear helps to explain why the administration waited a week before calling in the police to clear the campus. In fact, when the police entered barricaded Hamilton Hall in the early hours of April 30, the occupying students avoided struggles with the police, calmly marched out the main entrance of the building to the police vans waiting on College Walk.