If you don't know already, they're available here: http://apps.stlpublicradio.org/...
The PDF files are hosted on Amazon's cloud servers, and all the servers involved are getting absolutely hammered right now. I managed to grab 42 of them before the whole thing crashed, and what I've found is obnoxious as hell:
They released these documents in unsearchable format. No cutting and pasting, no looking for terms.
So right now I'm running them through an optical character recognition program. I can't emphasize enough that this is a massive document dump. My computer's about 130 pages into the first one so far, so it'll need the evening to complete. What I wasn't able to get were the witness interviews, the private autopsy report, and two files called "Radio traffic" and "RIOT a calls," so if anyone has those, please send them to my handle at gmail and I'll get them up in the afternoon.