Emo?

So yeah emo.. a swear word in some circles, but what does it really mean? I see emo kids all over the place and want to beat the shit out of them, but what exactly is this emo shit other than cutting and crying and writing in a blog?

sadness and pain...everyone wants to see me fail. The world is spinning on its axis of darkness. Everyone is evil. No truth exists. We should all just die and end the suffering before the bleeding eye of heaven rains darksness and hellfire upon us