UPDATE: This article has been updated with a photo from the DOJ news conference, the latest stock price information and a stock price chart. Key Takeaways The U.S. Department of Justice on Thursday announced an antitrust lawsuit against Ticketmaster parent Live Nation Entertainment. The DOJ accuses Live Nation of threatening and retaliating against venues and artists for choosing ticket providers other than its subsidiary Ticketmaster. To remedy the situation, the DOJ is seeking to break up Live Nation Ente ...