You are assuming that the topics I mentioned would be posted in the shape of short slogans, but they could be posted as long comments of several paragraphs and be flagged all the same.
Also there is no left bias. There is a progressive bias. Not exactly the same
That's not really what I meant re slogans, they were more examples of convenience. But I could have expressed myself better there.
When I see political comments get flagged, it's usually because they said something explicitly offensive or insulting. They'll sign of with an edit attacking downvoters, say something insulting about their political opponents, or reference a conspiracy theory. That will reliably get you flagged regardless of the position you are advocating.
Also there is no left bias. There is a progressive bias. Not exactly the same