On September 4, 1957, Arkansas Governor Orval Faubus ordered the National Guard to prevent nine African American students from enrolling in previously all white Central High School. Legal experts agreed that Faubus, by using the armed forces of a state to oppose the federal government, had launched the most critical challenge to the Constitution since the Civil War. Once enrolled, the nine students faced daily harassment, but were trained not to react to the barrage of insults and abuse. After months of being tormented, one of the students, Minnijean Brown, decided to fight back and was expelled from school. Members of the community were conflicted about what to do next. For some, the cost of school desegregation was too high; for the safety of the students and the greater community, they sought to postpone integration of the schools. Others strongly believed that the students must stay in school, no matter what sacrifices had to be made.