Now the question is, if the rhetoric gets toned down because of what this dirtbag did, it may prove he's right. The obvious question after that is, do we really want to teach fringe nutjobs that their spectacular acts of violence are effective?
It may prove he's right about what???
If the rhetoric had nothing to do with what he did then toning down the rhetoric has nothing to do with what he did, and certainly wouldn't be rewarding him!