Original sentence: The Weather Underground Organization (WUO), commonly known as the Weather Underground, was a radical left militant organization active in the late 1960s and 1970s, founded on the Ann Arbor campus of the University of Michigan
Edited sentence: The Weather Underground Organization (WUO), commonly known as the Weather Underground, was a far-left terrorist organization active in the late 1960s and 1970s, founded on the Ann Arbor campus of the University of Michigan