Well, for one example, just yesterday I was reading that the mainstream press didn't run with the "Biden is becoming decrepit" story because it might be viewed as helping Trump. So that was either "we can't run this story because it would help a political enemy" or "we can't run this story because it would be viewed as helping a political enemy".

That story was out there for months in non-mainstream press. (And probably on Fox, but they also are a fairly clear example of 'activism'.)