This[0] and this[1] are previous discussions on HN about climate change, with plenty of trolls. Just because something gets trolls, doesn't mean the whole thing should be destroyed or censored. Look at all of the other great discussion in those threads (and this one). If you get rid of every thread that is a potential double-edged sword, then you will eventually find yourself browsing an empty forum. There is no such thing as a perfect safe-space for discussion, and places that claim to be are typically void of interesting discourse.
> I decided it would most likely generate the sort of discussion that does not belong on the site.
The current thread as well as the two linked threads have plenty of positive discussion. Again, every topic is a double-edged sword. You're going to get people who agree and disagree, people who are serious and others who are trolls. That doesn't mean threads should be completely destroyed. The best course of action here is to flag the offending comments, rather than the entire thread.
[0] https://news.ycombinator.com/item?id=17698237
[1] https://news.ycombinator.com/item?id=18332012
