Simply liking or sharing an article on Facebook, retweeting it on Twitter, or merely reading it or any other articles related to government wrongdoing, surveillance, police misconduct or civil liberties might be enough to get you categorized as a particular kind of person with particular kinds of interests that reflect a particular kind of mindset that might just lead you to engage in a particular kinds of activities and, therefore, puts you in the crosshairs of a government investigation as a potential troublemaker a.k.a. domestic extremist.
Here is the latest technology being used to round up the Capitol Building 'insurrectionists'; https://www.rutherford.org/publications_resources/john_whiteheads_commentary/digital_trails_how_the_fbi_is_identifying_tracking_and_rounding_up_dissidents