Journalistic objectivity, or corporate thought-control?

Mentioned recently on a library listserv: The Miami Herald has banned its staff from attending concerts by Bruce Springsteen, James Taylor, the Dixie Chicks, Pearl Jam, Bonnie Raitt, John Mellencamp, and other musicians deemed "anti-Bush" by the newspaper's management. Original story in Spanish here. Translated excerpts as reported on the listserv:

The Miami Herald forbid its journalists to purchase tickets to anti-Bush
concerts supporting the Democratic party, because it would be a
political contribution not permitted by journalism ethics.

In a memorandum distributed to the daily's journalists, editor Tom
Fiedler explained that the profits from ticket sales would be handed
over to political action groups.

Fiedler also forbade them to accept free passes.

No word on whether the Miami Herald also forbids its staff from listening to Brooks & Dunn, Toby Keith, or other musicians who use their concerts to promote the Republican party. Nor is there any indication whether the Herald prohibits their staff from attending, say, Southern Baptist churches that promote Bush's theology of empire and adore him as if he were the Evangelical Pope. (Except, of course, when he accidentally fails to abhor other religions sufficiently.)