Boston officials are responding to the growing threat of white supremacists, just days after Patriot Front members marched through the city and reportedly assaulted a Black man. "We know these threats are continuing to escalate across the country, and that Boston must be the leading light in how we are acting in a coordinated way and tackling and supporting our community members," said Mayor Michelle Wu Tuesday. She joined officials from the local and state police departments, the FBI and the attorney general's office to discuss impending actions of known extremist groups. The Anti-Defamation League, which tracks hate groups nationwide,...