The radical Weather Underground launched a bombing campaign across the United States beginning in the late 1960s.
Explosives, underground bunker found during raid on Arlington home
Greenwich Village townhouse explosion - Wikipedia
21st Century Secret Documents: Weather Underground - FBI
Mark Rudd's Lessons From SDS and the Weather Underground for
Bombs, blackmail and wire-taps: how I spent my childhood on the
Billionaire Progressives Fund Weather Underground Terrorist's Ivy
In the 1980s, a Far-Left, Female-Led Domestic Terrorism Group
We Will Burn and Loot and Destroy”: The Weather Underground and
Bernardine Dohrn - Cross Cultural Solidarity