David was always displaying signs in his front window,
messages to the world about himself.
According to the news, he was out with some friends, got into a fight, was stabbed in the leg and bled to death before an ambulance could get there. http://www.police.nashville.org/news/media/2011/01/12.htm
Addendum: (Jan 14th) Last night about 10pm a couple people whom David was with the night he was murdered, came by his apartment. Somehow they had a key to his place, and they began going through his things, attempting to take his few valuables - that is, until some alert neighbors confronted them, and stopped them from taking anything. And these neighbors stood by until the intruders left. The police were called, but they never showed up.