FILE - This combination of images shows logos for companies from left, Twitter, YouTube and Facebook. A decision by Twitter and Facebook to ban former president Donald Trump in 2021, prompted many conservative social media users to join new platforms that claimed to offer a refuge from overzealous content moderation. And while they've failed to replicate the success of the major sites, experts in extremism see their growth as a cause for concern and possibly leading to radicalization and even violence. (AP Photos, File)