Eh, I haven't seen it in production.
I hate seeing politics of any stripe in my news feed, for example. I get enough of it elsewhere. But how can Facebook take an image, recognize that it is a cartoon, and that the cartoon is based on something political? We're not there yet. We're not anywhere near there yet.
You and I, as humans in this time period, will likely recognize a drawing of a man with kind of mocha-y skin, ears that stick straight out, large-ish front teeth, and kind of a squint as a standard issue caricature of a particular former President of the USA. We can immediately go "aha, politics!"
So I suppose we could try to train some AIs on a historical set of caricatures of politically-relevant figures. Of course, caricaturists and cartoonists of all stripes are called upon to produce new stylized exaggerations of people as they step into the limelight (or are dragged into it), so our training set must be updated on a daily basis. Hrm, some more work there ...
But then it gets into "politics you would like to hear" versus "politics you would NOT like to hear," and that is just going to be something that will require a mental model of what you do and do not like.
Right now, Amazon and Netflix cannot get my recommendations even CLOSE and their data is much better curated than what someone might type into a Facebook text box.
Chronological? Reasonable! Probably doable. Keywords? Who is putting those in? Who is curating that set of keywords?