Original sentence: He retired from the program on December 17, 2004
Edited sentence: At the same time, Moyers has emerged as one of the leading advocates of a set of conspiracy theories that center upon efforts by dangerous "right-wing" elements to control the government through winning elections, and to subvert the media's progressive agenda through an insistence upon fair and balanced reporting.He retired from the program on December 17, 2004 under pressure for bias and unfair reporting