I've brought this up in the past, but I'll bring it up again as I think it's a very important issue. The topic that sparked me to create this thread was the news article pertaining to Ronaldo's alleged rape accusation.
Now, I understand why you would disable comments on controversial topics, but just because it's understandable doesn't make it right. You have a reporting system and a team of moderators to deal with ugly comments, so let the moderators do their jobs by letting users report the nasty comments the mature users find.
It's insulting not to be allowed to post a comment on an article because of how others act.