Mac,

A very current example of your question is the US decision to de-certify MEK as a terrorist group:
It was the MEK’s involvement in terror including the killing of six Americans in the 1970s that prompted President Bill Clinton to designate the group a foreign terrorist organization in 1992.

Violence has always been a part of the MEK. The group was founded in 1965 as an armed opposition to the Shah of Iran. After the Islamic Revolution of 1979, it assassinated Iran’s first president and prime minister and later assisted Saddam Hussein in crushing the Kurdish uprising. In 2001 the MEK claimed that it renounced violence but its record showed otherwise. According to a report published by Human Rights Watch in May 2005, “The former (MEK) members reported abuses ranging from detention and persecution of ordinary members wishing to leave the organization, to lengthy solitary confinements, severe beatings, and torture of dissident members.”
Link:http://www.opendemocracy.net/zahir-j...unter-with-mek