Is 9/11 a Day, or Is It an Era?

After 20 years, it’s time for TV to treat Sept. 11 as serious, even divisive history, not just dutiful remembrance.After 20 years, it’s time for TV to treat Sept. 11 as serious, even divisive history, not just dutiful remembrance.Read MoreTelevision, September 11 (2001), Frontline (TV Program),