As a literal terrorist, obvious HP. The story of the People's Mujahedin is fascinating though. They went from being Marxists opposed to the Shah, to being secular pro-Saddamist opponents of the Ayatollah, to being a cultish organization touted as the next Iranian regime by neocons like Bolton and funded by the Saudis and Israelis.
Lots of organizations and individuals like this exist during revolutionary periods. Events move so fast and rapidly that the modern concept of spectromatic political order is completely scrambled and groups are forced to identify on principle rather than chasing an ever-shifting center. What changed wasn't the MeK so much as the Iran and global environment in which they existed.