When Covid-19 began tearing across the U.S. in March 2020, Alex Goldstein started posting on Twitter the pictures and stories of people who had died from the disease.  Over two years later, as the U.S. marks the grim milestone of 1 million people dead from Covid-19, Goldstein is still at it. The account, @FacesOfCovid, has now memorialized more than 7,000 people.