Answer: They were turned away by members of the Arkansas National Guard.
Explanation: September 4, 1957 was the first day of classes at Central High. Governor Orval Faubus called in the Arkansas National Guard to block the black students' entry into the high school. Later on, Eisenhower sent in federal troops to escort the Little Rock Nine into the school. It drew national attention to the civil rights movement.
The US's the fear of Radicals and the Bolshevik revolution in Russia. US Police roundedup suspected foreign born radicals and had them expelled from the United States. Fed growing demands to limit immigration.