The dissertation investigates the activism in favor of the humanization of birth in the contemporary scene, analyzing the actions and narratives related to humanized birth and the body along with the political subjects of Rede Parto do Princípio (PP), who assemble practices and modes of existences within the scope of this activism. The investigated collective has in the socio-communicational digital environment of Internet its main locus of composition, discussion and deliberation. Locus that escapes from fragile antinomies as real versus virtual, such a space opens up as a potential communicational environment where a common is possible for sharing experiences among women that activate other possible ways of thinking about reproductive and sexual rights. It takes into account theoretical issues that cross communication in the last decades such as: network society and the new modalities of collective action and activism. We expose tensions, dissensions and communicational controversies around an issue: what do such women say when they speak of humanized childbirth? And when they say my body, my rules? We try to understand: 1. the communicational processes that assemble the construction of political repertory and discussions; 2. the articulations between personal experiences of assistance to pregnancy and childbirth and activism; 3. forms of action, engagement and decision-making; 4. the negotiations of meanings and pertinences between the humanization of childbirth and sexual and reproductive rights; 5. the controversies between rights to reproductive and sexual health and the demands of the growing market of the humanization of childbirth. Methodologically, we carried out a virtual ethnography, with active participation of the researcher in the different environments of Rede Parto do Princípio and with the production of direct interviews and later analysis of content, as well as a critical study on the documents produced. From this composite, the research stipulated five categories of analysis: civic action; market / consumption; sharing of experiences; network management; motivations / guidelines.