I would say world_news isn't as bad as politics. Specifically, world_news seems to be full of more the_donald people jumping on any and every thread.

They are still there in politics as well, but they are usually way at the bottom of the thread. It is sad though, even if you assume that it isn't as "controlled" as it is -- pretty much the front page is all anti donald trump / republican stuff these days. While some of that is fair and is news, what is worse is that at least in the old days, there would be nice constructive discussion/counter points, usually as the top voted post in the comments. Now its mostly just circle jerking there.