N.Y. Times writer quits over open letter accusing Israel of ‘genocide’ - The Washington Post
(www.washingtonpost.com)
You literally can police people's bias if they want to be a good journalist. That's why the NYT has a clear policy on this stuff, that she violated twice! Some people can't control their biases or don't want to, and that's fine. They don't get to be journalists at organizations that have to maintain strict impartiality.
Also, if you think the newsroom doesn't have deeply debated guidelines and rules on how and when you use the label terrorist vs freedom fighter, or how to avoid using either term, you're kidding yourself. This is why editors exist.