On the witness stand (and later on national TV) the guy confessed to every detail of the murder he committed including where in the head he shot Tiller. There is no defending premeditated murder.
Yes, there is.
If you know someone has killed innocents before and is an evil killing machine who will do it again and has said so, then I say go for it.....with the knowledge that you will forfeit at least your freedom and possibly your life.
If Roeder gets the DP, he will die for the sins of the people of KS who allowed Tiller to operate there.