The Justice Department filed a sweeping antitrust lawsuit against Ticketmaster and parent company Live Nation Entertainment on Thursday, accusing them of running an illegal monopoly over live events in America — squelching competition and driving up prices for fans. The lawsuit, filed in federal court in Manhattan, was brought with 30 state and district attorneys general and seeks to break up the monopoly they say is squeezing out smaller promoters, hurting artists and drowning fans with...