The Federal Trade Commission and a bipartisan group of state attorneys general sued Ticketmaster and its parent company Thursday, saying they are forcing consumers to pay more to see live events through a variety of illegal tactics. The FTC said Live Nation and its subsidiary, Ticketmaster, have deceived artists and consumers by advertising lower ticket prices than what consumers must pay and falsely claiming to impose strict limits on the number of tickets consumers can buy for an event. In reality, the FTC said, Ticketmaster coordinates with ticket brokers who bypass those ticket limits.