Well the 'Rules For Posting Warnings' thread is Stickied at the top of the main warnings board where this was originally posted, there is another one at the top of this section, and they're both pretty clear.
Threatening to do something (because you've been turned down, ignored, or whatever and are sulking) is completely different to actually going ahead and attacking people in person, and making the distinction is vital. All this man has done so far is behave like an arsehole on the internet, and that's why the post is here rather than there.