"Bandying around phrases like fascist left and terrorist BLM is not journalism."
I'm sure that language betrays a point of view; but it's entirely normal in journalism that you could (often) point to terms used, or the way a certain narrative is being pushed, and say that the story has a bias in play.
Is that "journalism" to have such a bias? It depends on the context I think. There should be (as far as is possible) neutral news reporting in journalism. That's one side of journalism. But opinion pieces, or analysis of the news (where pundits will disagree) is another major part of journalism; and obviously you don't need to pretend that there isn't bias in that sort of journalism.
My point is, in this kind of story, where any sane reader would know that it's giving right-wing opinion on the tactics of political opponents, there is no problem at all in using some biased terms. Of course the story is coming from a particular perspective. That doesn't make it bad journalism imo. It's right wing opinion, so of course there is some bias to it. Big deal.
When you read the Guardian you know what you are getting. It's not a problem. When you read Breitbart you know that the analysis is going to be slanted in a certain direction. It's not a problem.
The problem would be in a supposedly "neutral" source like the BBC, where much of the time, if they are only having news analysis from a certain perspective, but pretending to be "impartial".
It's a problem when the BBC uses biased terms to control the narrative, as they are supposed to be impartial. It's not however a big deal for Breitbart to use biased terminology because they are open bias in a similar way to the Guardian. It's not bad journalism to have a bias in your analysis of the news, if you are quite open about it, and all the readers know what they are getting.
If I read source X, I will often be seeing things written from the perspective of conservative / liberal punditry. That in itself, I don't see as any problem at all.
The concern would be sources like the BBC that pretend to be impartial, or even have a requirement to be impartial. For me, it's the mainstream TV news media that is completely violating journalistic standards. I think it's fine for Breitbart to run "opinion" material, and that's completely acceptable as journalism.