She did, of course, remove the context:
Playboy: Implicit in the Administration's attempts to force the networks to "balance" the news is a conviction that most newscasters are biased against conservatism. Is there some truth in the view that television newsmen tend to be left of center?
Cronkite: Well, certainly liberal, and possibly left of center as well. I would have to accept that.
Playboy: What's the distinction between those two terms?
Cronkite: I think the distinction is both clear and important. I think being a liberal, in the true sense, is being nondoctrinaire, nondogmatic, non-committed to a cause - but examining each case on its merits. Being left of center is another thing; it's a political position. I think most newspapermen by definition have to be liberal; if they're not liberal, by my definition of it, then they can hardly be good newspapermen. If they're preordained dogmatists for a cause, then they can't be very good journalists; that is, if they carry it into their journalism.