Democratic presidential candidates march during the annual Bloody Sunday March across the Edmund Pettus Bridge in Selma, Alabama on March 1, 2020. (Photo by Joshua Lott / AFP via Getty Images)

Democratic presidential candidates, former New York City mayor Mike Bloomberg (L), former South Bend Mayor Pete Buttigieg (center L), Amy Klobuchar (R) (D-MN) and Senator Elizabeth Warren (C) (D-MA) march during the annual Bloody Sunday March across the Edmund Pettus Bridge in Selma, Alabama on March 1, 2020. (Photo by Joshua Lott / AFP via Getty Images)