Holly Bass, artistic director, Holly Bass|360. At the second annual John Wilmerding Symposium on American Art, held on March 23, 2018, at the National Gallery of Art, local artist Holly Bass discusses the importance of audience engagement as it relates to her current practice and the larger national conversation on equity, diversity, and inclusion. The John Wilmerding Symposium on American Art is made possible by a grant from the Walton Family Foundation.