In Brazil, under the direction of Walter Zanini (1963-1978), the MAC-USP, Museum of Contemporary Art of the University of São Paulo, was a place of artistic experimentation with rare freedom under the dictatorship of General Castelo Branco (1964-1985). Particularly sensitive to the questioning that crosses the traditional museum institution, as well as to the need to see it reinvent itself despite the difficulties of the context, Walter Zanini opens the space for experiments of young contemporary creation through various exhibitions such as the Jovem Arte Contemporanea (1963-1974). The 1972 JAC VI, which will be presented here, is particularly emblematic of these questions that Walter Zanini has constantly developed both in his writings and in his collaborations with artists to design original exhibition formats and question the institution. Through his commitment, he sought to make the museum a laboratory space richly marked with asperities and frictions that could develop there, perhaps also, despite himself.