DALLAS (AP) — The home arena of the Dallas Stars has launched an investigation into a video that apparently shows four fans celebrating a goal with a Nazi salute. A spokesperson for the American Airlines Center told WFAA-TV in Dallas that the arena has “zero tolerance for any acts of hate and/or discrimination.” “We strongly denounce the actions that appear to be depicted in the video footage and are conducting an internal investigation,” the spokesperson said. “All fans and attendees are expected to adhere to AAC and, as applicable, NBA or NHL Codes of Conduct when attending events.” A Stars...