“…A total of 152 channels and groups were identified, and their entire chat histories were extracted as well (n1 = 1,426,938 messages). Based on previously-identified relevant categories (Curley et al, 2022;Holzer, 2021;Zehring and Domahidi, 2023), a broad categorisation of the contents in each channel and group was made to create smaller sub-samples: Querdenken (n = 617,119; movement infrastructure featuring the name), Activism (n = 273,001; social and political activism), Info (n = 316,126; general information about pandemic-related issues), News (n = 95,284; news outlets and stories), Protest (n = 69,864; information and organisation of protests), Lawyers (n = 33,438; legal advice) and Doctors (n = 22,106; health advice). For the semi-automated quantitative content analysis, only messages featuring exclusively text (n2 = 1,273,744) were kept in the sample.…”