What event led to the case involving Giuseppe Pinelli's widow?
Piazza Fontana bombing
Ustica Massacre
Bologna Train Station bombing
Aldo Moro kidnapping
Answer
The Piazza Fontana bombing was the event that led to the case involving Giuseppe Pinelli's widow. The bombing occurred in 1969, and Pinelli was interrogated by the police as a suspect. He died under mysterious circumstances during the interrogation.
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