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He was, obviously among many other and later things a contributor to Operaiism. As large part of the radical American left love Toni Negri, this article here should be expanded. As far as I can see, the french and the spanish articles are wholly based on the italian one.--2001:9E8:564A:AD00:2514:83C3:813:1B3A (talk) 15:21, 22 December 2022 (UTC)[reply]