May 19th Communist Organization

The May 19th Communist Organization, also variously referred to as the May 19 Coalition, May 19 Communist Coalition, or M19CO, was a US-based far-left group designated as a terrorist organization, formed by members of the Weather Underground Organization. The group was originally known as the New York chapter of the Prairie Fire Organizing Committee (PFOC), an organization devoted to promoting the causes of the Weather Underground legally, as part of the Prairie Fire Manifesto's change in Weather Underground Organization strategy, which demanded both aboveground mass movements and clandestine organizations.

Source: Wikipedia — May 19th Communist Organization (CC BY-SA 4.0)