A 100-foot photo collage will be unveiled at the SFMOMA this Thursday. The collage is the work of French photographer JR and depicts the more than 1,200 people that he photographed at 22 locations across San Francisco in early 2018. JR's larger-than-life projects have taken place everywhere from Kenya to the Louvre to the U.S.-Mexico border. JR, who strictly adheres to using that pseudonym, joins Forum to discuss the new collage and how global immigration has affected his art.