More than 660,000 white flags have been displayed in a solemn tribute across a vast expanse on the National Mall in Washington, DC — each representing a life lost to the coronavirus pandemic in a heart-rending exhibit called “In America: Remember.” The 20-acre installation — which was unveiled Friday near the Washington Monument — is the second chilling exhibit that artist Suzanne Brennan Firstenberg said is based on a project trying to capture the “human dignity” behind the staggering death toll. As of Friday, 670,034 deaths — one of every 500 Americans — have been recorded in the US and...