An Ohio city that was racked with chaos and threats last year related to an influx of Haitian immigrants filed a lawsuit on Thursday against a neo-Nazi group that it alleges was at the heart of the onslaught. The city of Springfield, Mayor Rob Rue and several others sued the Blood Tribe, its leaders Christopher Pohlhaus and Drake Berentz and seven unnamed followers in U.S. District Court in Dayton. They accuse the group of “engaging in, and inciting, a campaign of harassment and intimidation, motivated by ethnic and racial hatred, against those who supported Springfield’s Haitian community in the face...