John Lewis: Celebrating a Hero will air on Tuesday on CBS and several other ViacomCBS channels, including BET and MTV. It will also be shown on Winfrey's OWN. The special will feature interviews, musical performances and inspirational conversations about Lewis’ life and legacy. “John Lewis was an extraordinary man,” said Winfrey. “A man of great vision who lived a life with the purpose of making sure America lived out its ideals.” ALSO: John Lewis' funeral shows that great speeches still matter.