Grenada Public Schools Riot

Black children were admitted to Grenada Public Schools for the first time in 1966. The white townspeople rioted violently, gathering outside of the schools to prevent the students from entering and attacking the children who did manage to get inside when they left.  For weeks, the black students were escorted by civil rights workers until a court ordered that the mob disperse.

Source:
http://www.lib.usm.edu/legacy/archives/m414.htm