Artist Titus Kaphar on filling in the blanks of art history's narrative

Twisting, gilding and whitewashing the canvas: artist Titus Kaphar explores the omissions and the empty spaces in art history, and fills in the blanks through painting and sculpture. His latest exhibition, presented by Belgian gallery Maruani Mercier, is "The Evidence of Things Unseen" and it asks an urgent question: just why were there no Black faces in Renaissance religious art?