Original sentence: The group's name, N17, refers to the final day of the 1973 Athens Polytechnic uprising, in which a protest against the Greek Military Junta (1967 - 1974), also known as the Regime of the Colonels took place
Edited sentence: The group's name, N17, refers to the final day of the 1973 Athens Polytechnic uprising, in which a protest against the United States-backed Greek Military Junta (1967 - 1974), also known as the Regime of the Colonels took place