LINCOLN HEIGHTS, Ohio — Nearly every morning for the last month, Jay has been waking up before sunrise to drive around the streets of Lincoln Heights, patrolling neighborhood bus stops to make sure children are getting to school safely. “We have a very tight community, so all of our kids, they know us,” he said. But for anyone outside the community, Jay’s presence might be a mystery. He wears a face covering along with tactical vests, and Jay is not his real name, which he asked not to use to prevent harassment from hate groups. An armed volunteer for the...