In this Friday, Feb. 10, 2017 photo provided by HBO, guests on a panel, John Waters, from left, filmmaker and author, Karine Jean-Pierre, senior advisor and national spokesman for MoveOn.org, and Piers Morgan, U.S. editor-at-large DailyMail.com, speak with host Bill Maher on the show, “Real Time with Bill Maher,” in Los Angeles. Morgan and British author J.K. Rowling are in a Twitter war over American politics.