Scott Presler—#ThePersistence on Twitter—hasn’t stopped cleaning up trash. “We did a cleanup in New Orleans about two months ago,” says Presler, a conservative activist from northern Virginia who also registers voters and teaches people how to run for office. More recently, he led a cleanup at the South Beach Boardwalk on Staten Island. Presler’s cleanups began a little more than two years ago with a fateful Tweet. In July of 2019, after Rep. Elijah Cummings (D-Md.) said that children at the U.S.–Mexico border were “sitting in their own feces” and unable to shower, Trump responded on Twitter by calling the border “clean, efficient, & well-run, just very crowded,” while calling Cummings’ home district “a disgusting, rat and rodent infested mess.” The resulting conflagration on social media caught Presler’s eye. But something didn’t sit right. “I was really disappointed, because I saw that everybody was quick to post on social media,” …