The term self-conscious takes on a whole new meaning in today’s social media era . . . Immerse yourself in the ultimate collection of selfies by America’s leading artists: from 1901 through 2015 . . . Pictured above — Self-Portrait with Rita, by Thomas Hart Benton. Oil on canvas (c. 1924). National Portrait Gallery, Smithsonian Institution. Gift of Mr. and Mrs. Jack H. Mooney. At a time when millions of selfies are posted every day and identity becomes more fluid, this impressive collection of self-portraits is spectacular. From every decade of the 20th and 21st centuries (1901 to 2015), by America’s leading artists. Greetings on behalf of this amazing new show from the Smithsonian National Portrait…