We visit the Phillips Collection, this country’s first modern art museum, which has reopened for its 100th anniversary with an exhibition highlighting the collection’s great diversity. After a year-long closing due to COVID precautions, the museum in Washington DC has reopened to visitors.  In addition to great modernist masters Cezanne, Bonnard, De Kooning, Rothko, etc., the exhibition showcases new acquisitions, highlighting works from their show, cut short last year, titled Riffs and Relations, which explored the work of African American artists in the Modernist tradition.