Complex sentence: Operation Mockingbird was allegedly a large-scale program of the United States Central Intelligence Agency (CIA) that, beginning in the early 1950s, attempted to manipulate news media for propaganda purposes, and funded student and cultural organizations and magazines as front organizations.
Split into simpler sentences: Operation Mockingbird was allegedly a large-scale program of the United States Central Intelligence Agency (CIA) that, beginning in the early 1950s, attempted to manipulate news media for propaganda purposes. It funded student and cultural organizations and magazines as front organizations.