But again—in Star Wars, the original film, by itself, without any other films being made yet—Ben Kenobi says of Anakin that “I took it upon myself to train him as a Jedi” and “A young Jedi named Darth Vader who was a pupil of mine […] helped the Empire to hunt down and destroy the Jedi Knights. He betrayed and murdered your father.”
That is in the first act of the first film all by itself.