[The Conversation Africa] At the Boston waterfront sits the Institute of Contemporary Art, an architectural marvel that gleams against the harbour in a wealthy neighbourhood. My Uber driver, an African immigrant, remarks as I get out: "Be careful, this is an expensive area." His comment hints at the subtle tensions of race and class in such affluent spaces, where one's presence as an outsider is immediately registered. I assure him I've just come to see the art.