Hans-Joachim Klein, a notable figure from Germany's radical left-wing militant scene, has a storied past as a member of the Revolutionary Cells (RZ) group.
In 1975, Klein played a significant role in a high-profile attack orchestrated by the infamous Carlos the Jackal on the OPEC headquarters in Vienna, an event that would have a lasting impact on his life.
Unfortunately, Klein suffered serious injuries during the attack, which would ultimately contribute to a profound shift in his beliefs and actions.
Two years after the OPEC attack, Klein publicly renounced his involvement in political violence, marking a significant turning point in his life.
After spending several decades in hiding, Klein was finally apprehended in 1998, paving the way for a lengthy legal process that would culminate in his prosecution for his role in the OPEC attack.
In the end, Klein was sentenced to a nine-year prison term, which he served until his parole in 2003.
