I don't think that @unethical_ban is talking about downvoting the comments, but downvoting the submission itself. There is no "downvote" option for submissions, only upvote and flag.
oh no, I was talking about comments. And the parent is right, it comes along once you have enough karma.
> And the parent is right, it comes along once you have enough karma.
Yes, but only for comments, not for article submissions.