It’s not only manipulation of what’s trending. I constantly have stories removed from my News Feed. They are USUALLY still on my Timeline, so I “share” them from there. Sometimes that doesn’t work, and sometimes they disappear from my Timeline too. They don’t like religious content or conservative.
I’ve kept “religious content” just fine. However they “flattered” me into taking a new identity as a “public figure” which meant having to refriend all my old friends... stinks.