Social movements can either benefit from or suffer due to the existence of radical flanks. The radical actions of these flanks can position the main protest actor as a viable and moderate alternative, or conversely, the presence of such flanks can lead to the movement's disrepute. While political sociology has extensively studied these so-called radical flank effects, most research has focused on individual-level effects—specifically, how citizens' assessments change—or on protest outcomes, such as how radical flanks may influence a movement's policy success. This paper explores an additional dimension of radical flank effects: the impact of radical flanks on media reporting about the movement. The portrayal of protest actors is crucial for shaping public and elite attitudes towards them; thus, we argue that a mediatized flank effect is a key determinant of how flank effects manifest. This study examines how protest events from radical flanks, such as Last Generation and the German spin-off of Extinction Rebellion, influence media coverage of Fridays for Future (FFF) in Germany, concentrating on the movement's visibility and potential negative framing in the media. We analyze protest event data and media reports from five national outlets between 2019 and 2024, employing text-as-data methods and auto-regressive models for our analysis.