sentences:  In the 1960s, Carter was involved in civil rights movement, both editorially and in political action.In 1968, he co-chaired the "Loyal Democrats of Mississippi" that replaced Mississippi's previously all- white delegation to the Democratic National Convention, but later criticized the Delta Ministry (part of the biracial coalition) in his editorials.In 1964, he worked on Lyndon B. Johnson's presidential campaign, but Johnson and his vice-presidential choice, U.S.