The years of the protests marked a period of social turmoil in Italy. The critical impulses that developed within worker and student groups had political effects even on science. This paper aims to offer a historiographical description of some stages of the relationship between scientists and protesting movements, going back over the developments in science communication in Italy between the late sixties and the seventies, focusing on the case of Lucio Lombardo Radice and his work as a TV populariser. The reinterpretation of the recent past could be useful to better understand the contemporary developments in science communication from a historical perspective.