Pietro Valpreda ( 22 June 1933 – 6 July 2002 ) was an Italian anarchist , poet , dancer and novelist . He was sentenced to prison on charges of being responsible of the December 1969 Piazza Fontana bombing ; in 1987 was acquitted by the Supreme Court of Cassation for lack of evidence
Piazza Fontana bombing
Piazza Fontana bombing
Pietro Valpreda