Lotta Continua
The title was inspired by the hypothesis, which emerged from some early rumors about the wounds found on Pinelli's body and supported by Lotta Continua headed by Adriano Sofri and others extra-parliamentary circles, that Pinelli's defenestration was caused by a karate blow. The following weeks, June 20 and 27, the letter was republished, with the support of 757 signatures which included Gae Aulenti, Marco Bellocchio, Bernardo Bertolucci, Tinto Brass, Liliana Cavani, Toni Negri, Eugenio Scalfari, Oliviero Toscani.