The pervasiveness of new information flows and integration models stemming from the platformization of social life, which has been driven by the widespread adoption of novel communication technologies and digital social networks, has facilitated collective actions in terms of mobilization, reach, organization, and the emergence of new communication tools. Alongside the centrality of the internet in the dynamics of social life, extremist movements, which were already present in society, have gained new means to perpetuate and organize themselves. Telegram, as a digital platform with content moderation policies that are lenient compared to others, has become an open stage for the concentration of extremist users and groups. In view of this, the platform in question has also become a research object for studies on online radicalization, making it possible to monitor radical ideologies and the social consequences observed in the promotion of violence and hate speech. Seeking to identify the immaterial bases and social dynamics that compose extremist groups in Brazil, an analysis of data extracted from Telegram between May 1st, 2023, and August 30th, 2023, was conducted. For this purpose, a hybrid approach was adopted, combining big data techniques and sociological analyses. The results of this work shed light on how the opinions encouraged and expressed in radical digital communities contribute to the promotion of violence outside digital media platforms.