Complex sentence: It was, Rustin stated, and newspapers reported, "the largest civil rights demonstration" in American history, and, Rustin argued that "the movement to integrate the schools will create far-reaching benefits" for teachers as well as students.
Split into simpler sentences: It was, Rustin stated, and newspapers reported, "the largest civil rights demonstration" in American history. Rustin said that "the movement to integrate the schools will create far-reaching benefits" for teachers as well as students.