I don't want any political interference in PBS.
Unfortunately, IMHO, some PBS programming was politically biased reflecting left-aisle attitudes and did not present a balanced viewpoint. For example, their series on New York City focused heavily on the lowest social station and gave short-shrift or a even negative view to the wealthy and business community. A more balanced presentation would've focused on reasons factories and the middle class left the city in the 1950s. All the show did was simply blame them for the troubles the people in the city had during those years. The story of the poor and disenfranchised is important, but the stories and concerns of the middle class and business community are important too.
Harry Truman and Richard Nixon both independently remarked that history will be written by a liberal perspective because most writers and social critics are of a liberal bent.