News ‘Wakanda Forever’: Oprah, Chris Evans mourn loss of ‘Black Panther’ star Chadwick Boseman August 29, 2020 Carly Mallenbaum, USA TODAY Comments Off on ‘Wakanda Forever’: Oprah, Chris Evans mourn loss of ‘Black Panther’ star Chadwick Boseman Famous friends Oprah Winfrey and Chris Evans are taking to social media to mourn 'Black Panther' star Chadwick Boseman, who died Friday of cancer.