My Facebook news feed has been getting bombed a lot the past few days with posts from pages I haven't liked. For example, I like Roger Ebert. In the wake of his death, Scorsese, A/V Club, Joseph Gordon-Levitt (example below), etc, whom I have not liked, are showing up in my feed with their posts on him. The same thing happened with all Marvel Cinematic Universe properties last week, while I have only liked a couple of them. How do I block such posts?
I haven't had any luck searching Google/FB Help for promoted or sponsored content, but these aren't even the right terms. According to https://www.facebook.com/help/promote (under Where do my promoted posts show on Facebook?), promoted content is labeled "sponsored" under the "Like/Comment/Share" links.
Why is this happening now when it's never happened before? Is there a way to stop it? Is it now simply an unavoidable consequence of liking pages? If there's no way in Facebook's settings, is there a creative solution that involves something like AdBlock+?