Okay. Were you hoping I would address this scenario of your own fabrication, or are you able to make your point using this actual situation right in front of us that we are discussing?
People self-expressing dislike for some content under a link on public forum that explicitly invites comment is not hostility. Making comments and disagreement about politics is not hostility (particularly in response to political content being posted). It just isn't.
If you posted up a page of pictures of "Lifted trucks of West Virginia adorned with creative bumper stickers" here you would get a lot of negative opinions and politcial commentary. That also would not be "weird hostility", it would be completely obvious and understandable preferences and opinions ranging from people who don't like the trucks or covering them with stickers, to those who feel strongly about politics.
Again, you're allowed to discuss things and disagree with them. People aren't assholes or hostile for doing it. Learn to live and let live, no need to try to guilt people about it.