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I'll leave here the original URLs for the media, ordering from more mainstreamy to lesser known. If I find a native Fediverse account, I'll add their @ here too.
By the way, here's a far better and comprehensive listing of all of our alternative media, already ordered by significance.
About La Nación, and why it is very important not to mirror their content in the Fediverse, here's a non-Argentinian source that sheds some light about what I said regarding human rights violations. But it's not just an isolated case of kidnapping and torture; the media was always the herald for the conservative oligarchy, the authoritarian, and even the mafia.
Perfil, Misiones Online, and several others are just subsidiaries, not independent media. They all, more or less, replicate the same voices: those of the Establishment.
As for alternative voices, let me check if I can compile some with at least RSS. Not a lot, and the few that still survive don't have presence in the Fediverse AFAIK.
If I needed a reason to block the hell out of this account, is this.
La Nación, Perfil, and most of the media picked here belongs to conservative oligarchs and concentrated mass media that really hurts our democracy. Damn, La Nación is even knee-deep in human rights violations and torture to obtain paper for their bloodstained newspaper.
WHY IS THAT ON FEDIFOLLOWS.