Bill Ayers. You mean the guy who bombed the Capital building in 1971?
Yes, that's the one.
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"In 1969, Ayers co-founded the Weather Underground, a self-described communist revolutionary group that sought to overthrow imperialism.[2] The Weather Underground conducted a campaign of bombing public buildings (including police stations, the United States Capitol, and the Pentagon) during the 1960s and 1970s ...”
Ayers is a retired professor in the College of Education at the University of Illinois at Chicago, formerly holding the titles of Distinguished Professor of Education and Senior University Scholar.[3]
In fact, the communist-revolutionary, domestic terrorist, Weather Underground openly bragged about bombing the US Capitol AND the Pentagon!
"VVAW-supported demonstration during the Washington Spring Offensive,
April - May 1971. Notice the North Vietnamese and VietCong flags."
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In 1954, a group of Puerto Rican [Marxist] separatists got onto the House floor and opened fire with handguns. Five members of the House were wounded in the attack, including Rep. Alvin Bentley (Mich.). He's in the photo below, being carried out by pages.