I recommend against deleting unpopular comments. Editing in something like "Update: I disavow!" if you've changed your mind is harmless, but in general there's a benefit to treating public statements as a sort of permanent record.

This practice exposes people to potentially underappreciated viewpoints and allows others to track the development and popularity of ideas.

I have many poorly rated comments preserved here, but on balance I think people respect my personal commitment to the truth, however I see it. In the realm of public expression, it's honesty and integrity which matter most. Everybody is wrong sometimes; it's part of the process of discovering truth.

But he was exactly where he wanted, in this kid's face trying to provoke him. And the kid just smirked, earning great hatred and hostility from people who don't think there's any place for a smile in this cold, brutal world.