Ava Duvernay has added her tribute to beloved U.S. politician and civil rights icon John Lewis, following his death on Friday (July 17, 2020).The congressman lost his battle with cancer, aged 80, and now moviemaker DuVernay is among the politicians and presidents paying their respects.Posting photos of herself with Lewis on Twitter, the director of 2014 movie Selma, which featured actor Stephan James playing the late activist, wrote:Dear Congressman.