That's the "dear Peace officer letter" and it HAS been around and around for years. I've read it on FR, FWIW, and it was old then.
Look down aways in the thread that letter was posted to.
There is a guy with the moniker "DOC", and he is the one who says, in parallel to the Tarot card screed, "Dear Mr. Policeman: ..."
A guy named AZ redneck follows up with a complaint that cops all think they are God ....
That "DOC" fella, seems to have taken his name from this group calling themselves Davids outcasts. This group is reffered to by the acronym DOC in letters that link up with Wayne Hicks causes.
Below is the link to their yahoo newsgroup.
http://groups.yahoo.com/group/davids_outcasts/Noticed that.
If the sniper's game is to evade capture for as long as possible, it would make sense to distort your "profile" as much as possible to keep LE off your path.
It would be like using digital camouflage, or a decoy. They could have easily pulled a few choice quotes from the FR, referenced them in the planted evidence, and all of a sudden the coppers are looking at the "Vast Right Wing". They could kill two ideological birds with one stone
This dude may not have any message or point to make, it could simply be to create havoc and disrupt our comfy lives. I think he wants American's to feel pain and sorrow.
People who value liberty also tend to value the lives of others. In my less then humble opinion, there is an ideological link. This sniper could not be from RTKBA crowd and still hit innocents, unless they were collateral damage (OKC?). The sniper does not see civilians as an acceptable loss, but the primary target.