"FBI files from 1976, recently made public under the Freedom of Information Act, confirm the connections between Weatherman, Havana, and Moscow. Weatherman leaders like Mark Rudd traveled illegally to Havana in 1968 to engage in terrorist training. There, camps set up by Soviet KGB Colonel Vadim Kotchergine were educating Westerners both in Marxist philosophy and urban warfare."
http://www.discoverthenetworks.org/groupProfile.asp?grpid=6808
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"Their founding document [the Weather Underground's] called for the establishment of a "white fighting force" to be allied with the "Black Liberation Movement" and other "anti-colonial" movements[1] to achieve "the destruction of US imperialism and the achievement of a classless world: world communism."..."-Berger, Dan (2006). Outlaws of America: The Weather Underground and the Politics of Solidarity. AK Press, 95.
http://en.wikipedia.org/wiki/Weatherman_Underground#cite_ref-Berger_0-0
Outlaws of America: The Weather Underground and the Politics of Solidarity (Paperback) by Dan Berger
http://www.amazon.com/Outlaws-America-Underground-Politics-Solidarity/dp/1904859410
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From the New York Times, August 24, 2003
"they [the Weather Underground] employed revolutionary jargon, advocated armed struggle and black liberation and began bombing buildings, taking responsibility for at least 20 attacks. Estimates of their number ranged at times from several dozen to several hundred."
Article: Quieter Lives for 60's Militants, but Intensity of Beliefs Hasn't Faded
http://query.nytimes.com/gst/fullpage.html?res=9F04E4DE1539F937A1575BC0A9659C8B63&sec=&spon=&pagewanted=2
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From American Thinker, September 16, 2008
Article: Obama's Foul Weather Friends
By Scott Swett and Roger Canfield
"As a gesture of solidarity, the Vietnamese who [Bernardine] Dohrn met in Budapest presented her with a ring made from an American aircraft shot down over North Vietnam. Bill Ayers would receive a similar ring while meeting with Vietnamese communists in Toronto. He later recalled being so moved by the gesture that he 'left the room to cry.' He said, 'I realized...America was an evil... and that I was... living inside the belly of the beast...' "
http://www.americanthinker.com/2008/09/obamas_foul_weather_friends.html