Whittaker Chambers affected anti-communist movement by testifying against Alger Hiss in his espionage trial.
Whittaker Chambers was an American writer and editor who was a Communist Party member and Soviet spy.
Chambers later defected from the Soviet underground and worked for Time magazine.
He testified about the Ware group in what became the Hiss case for perjury , which is often referred to as the trial of the century.
Learn more about Whittaker Chambers at https://brainly.com/question/15373620