Interesting comment, Gargoyle. I guess my expansion of the term "legitimate journalistic enterprise" would be this:

Any enterprise that is concerned with and that engages in the business or the practice of "journalism". Webster's Online defines journalism in this way...

1 a : the collection and editing of news for presentation through the media b : the public press c : an academic study concerned with the collection and editing of news or the management of a news medium

2 a : writing designed for publication in a newspaper or magazine b : writing characterized by a direct presentation of facts or description of events without an attempt at interpretation c : writing designed to appeal to current popular taste or public interest

Websters Online defines "news" as...

1 a : a report of recent events b : previously unknown information (I've got news for you)

2 a : material reported in a newspaper or news periodical or on a newscast b : matter that is newsworthy

...and this is how Websters Online defines "propaganda"...

1 capitalized : a congregation of the Roman curia having jurisdiction over missionary territories and related institutions

2 : the spreading of ideas, information, or rumor for the purpose of helping or injuring an institution, a cause, or a person

3 : ideas, facts, or allegations spread deliberately to further one's cause or to damage an opposing cause; also : a public action having such an effect.

Does this expand the term adequately for what you wanted to know?