This note reflects on the methodological challenges I faced as an ethnographer navigating organizational secrecy, the conscious suppression of knowledge through practices related to keeping oneself or keeping others ignorant, during my dissertation fieldwork on the French yellow vest movement. In the course of this ethnographic study, I got involved with highly committed people willing to engage in radical actions and high risk activism (McAdam, 1986), ranging from civil disobedience and illicit occupations to collective action based on black bloc tactics (Dupuis-Déri, 2003; Juris, 2005).