What draws young people into the universe of toxic far-right groups that pine for a White ethno-state? The temptation to hate often begins with innocent chatter before it’s fed by degrees — and algorithms, says Cynthia Miller-Idriss, a sociologist and education expert who tracks such groups. They work through a mix of alluring aesthetics, direct appeals in social media and online gaming, even in old-fashioned flyers on college campuses. But, Miller-Idriss has found, the path to extremism can be disrupted.