I don't have much doubt this guy was one loud screamer at the Teabagging Rally. This is not to disparage, more than necessary, all the teabagging crowd, but even they know there were nuts that stood out amongst the general nuttery.
Here's a choice quote:
It seems as though what is happening in Kansas could be compared to the "lawlessness" which is spoken of in the Bible. Tiller is the concentration camp "Mengele" of our day and needs to be stopped before he and those who protect him bring judgement upon our nation.
That quote is almost certainly one from Scott Roeder the alleged assassin.
McClatchy (naturally) has more on Roeder. He is a walking billboard of far-right nuttiness that FoxNews treats as rational policy positions.