Sheryl Lee Ralph talks new Nat Geo doc on Red Tails, defends celebs who get political: 'Use your platform'

USA TODAY - For more and to sign up click here Judy Kurtz Sheryl Lee Ralph is defying critics who decry Hollywood actors getting political, encouraging other artists to speak out. "If you have a platform, use your platform and use it for good," the "Abbott Elementary" star told ITK in a recent interview when asked about celebrities who have been criticized for weighing in on politics. "How dare people try to tell…