He walked straight into the Washington DC Holocaust Museum and proceeded to shoot to death a black security guard, whereupon he was himself fired upon by another guard and critically injured.
The left claims he is a conservative, a Republican, a George W. Bush supporter, etc. The Right claims, with not just a little dab of evidence, that he was
far from being a conservative. In fact, he was a socialist who believed that Karl Marx perverted the original socialist philosophy every bit as much as he believed the Apostle Paul perverted Roman's original pagan culture with Christianity, which he sees as just another Jewish plot.
Most disturbingly to me, some claim he is a Neo-Pagan, and perhaps he is in a sense. He would seem to fit right into the dogma adhered to by the Wotanists, a group of adherents of the Norse deities, who are distinct from the more moderate Asatru.
The question is, what did he have to gain, this eighty-eight year old man, by walking into the Museum and taking the life of one relatively insignificant individual. He pretty much threw away the rest of his life.
My guess he is knows he is nearing the end and wanted to make some kind of major contribution to his cause. He might even hold out hopes of being some kind of godfather figure within the growing white racialist prison population, many of whom are Wotanist, while calling themselves (falsely) Asatru.
He is basically just a sad, decrepit, possibly depressed old man who should be confined to a sanitarium for the rest of his natural life. There is no need in giving the racialists a martyr on a silver platter by executing him, since he is not going to live much longer anyway. However, it is also not advisable to put Von Brunn in a situation where he might actually profit from his despicable crime by becoming a leader and hero, and possibly teacher and example, amongst a radical prison population.