In a fraught moment of political protest across the country, the live mic at televised award shows has become a potent weapon. As such, Grammy Awards producer Ken Ehrlich has a message for those who will take the stage on Sunday’s ceremony: Bring it on. Ehrlich has no reservations about political messages or anti-President Trump statements flying during CBS’ three and a half hour Grammycast. Artists expressing passionate opinions about real-life issues are the stuff of memorable moments, he said. “One of the tenets of our show is artistic freedom, and over the years we’ve shown we do believe in...