Topher Grace plays David Duke, the head of the Ku Klux Klan in Spike Lee’s latest film, “BlacKkKlansman.” San Francisco gate reports that it was a mentally taxing role for Grace, so he developed an interesting hobby to help him detox: film editing. In an interview with IndieWire, Grace said that spending several months playing the KKK’s David Duke left him feeling depressed — so much so that not even the birth of his daughter during production could lift his spirits.