President Joe Biden is set to pay tribute to the heroes of “Bloody Sunday,” joining thousands for the annual commemoration of the seminal moment in the civil rights movement that led to passage of landmark voting rights legislation nearly 60 years ago. The visit to Selma, Alabama, on Sunday also is an opportunity for Biden to speak directly to the current generation of civil rights activists. Many feel dejected because Biden has been unable to make good on a campaign pledge to bolster voting rights and are eager to see his administration keep the issue in the spotlight. Biden intends...