In 2003 , Weather Underground members stated in interviews that they wanted to convince the American public that the United States was truly responsible for the calamity in Vietnam . The group began striking at night , bombing empty offices , with warnings always issued in advance to ensure a safe evacuation . According to David Gilbert , who took part in the 1981 Brink 's robbery that killed two police officers and a Brinks ' guard , and was jailed for murder , " their goal was to not hurt any people , and a lot of work went into that . But we wanted to pick targets that showed to the public who was responsible for what was really going on . " After the Greenwich Village explosion , in a review of the documentary film '' The Weather Underground '' ( 2002 ) , a '' Guardian '' journalist restated the film 's contention that no one was killed by WUO bombs
1981 Brink 's robbery
Brink's robbery (1981)
Weather Underground