Okwui Enwezor (1963-2019) was a Nigerian curator, author, university lecturer, and from 2011 to 2018, director at the Haus der Kunst in Munich. Saskia Bos is a Dutch curator and exhibition organizer. Doris von Drathen, born 1950, art historian, editor, and author of numerous publications on contemporary artists, and writes for art magazines such as Kunstforum International or Artforum. Gilda Williams is based in London since 1994 and a New York-born contemporary art critic, editor, and teacher. Adrian Searle has been art critic for the Guardian since 1996. Fiona Tan is a visual artist and filmmaker and best known for her skillfully crafted video and film installations. Her installations and photographic works have been shown in numerous solo and group exhibitions in international venues. In 2009 she represented The Netherlands at the 53rd Venice Biennale, and her works had been shown 2010 at the Sao Paulo Biennial, 2010 Venice Architecture Biennale, 2002 Documenta IX, and is collected at Tate Modern London, the Guggenheim Museum New York, and MCA Chicago. John Berger (1926-2017) was a British writer, painter, and art critic. Lynne Cooke, born 1952, is the Senior Curator, Special Projects in Modern Art, at the National Gallery of Art, Washington DC.