In 1969 he co-founded the radical left organization the Weather Underground, which conducted a campaign of bombing public buildings during the 1960s and 1970s.
Participated in the bombings of New York City Police Headquarters in 1970, of the Capitol building in 1971, and the Pentagon in 1972
So as they say
If you associate with known Terrorist, then you yourself are abdicating
Terrorism it's self!!!!