NEW YORK — Deborah Archer, a professor at New York University School of Law with expertise in civil rights and racial justice, has become the first Black person in the 101-year history of the American Civil Liberties Union to be elected its president.The ACLU announced Monday that Archer was elected over the weekend in a virtual meeting of the organization’s 69-member board of directors. She succeeds Susan Herman, a professor at Brooklyn Law School who had served as president since 2008.As the ACLU’s eighth president …