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After gathering the behavioral data and activities of 700,000 supporters of Stop the Steal, Facebook mapped out the connections among them and began dividing them into ringleaders (those who created content and strategy), amplifiers (prominent accounts that spread those messages), bridgers (activists with a foot in multiple communities, such as anti-vax and QAnon), and finally “susceptible users” (those whose social circles seemed to be “gateways” to radicalism).
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Jeff Horwitz (Broken Code: Inside Facebook and the Fight to Expose Its Harmful Secrets)