The media stereotype of all domestic terrorists is that of the angry, White male. In most cases, nothing could be further from the truth (certainly the Washington, D.C. snipers wouldn't fit that bill).
In particular, the two terrorists to whom you are referring were members of the Aryan Nations. These people all subscrbe to the theory of ZOG. ZOG is the Zionist Occupation Government, i.e. the Jews run America from behind the scenes (gee, where have we heard *that* tripe before). The Aryan Nations is strongly associated with neo-NAZIs. Most Aryan Nations adherents fly the Confederate Battle Flag alongside the NAZI swastika (interesting sidenote: swastika is farsi - "swas" mean good and "tika" meaning luck or cross; farsi is also the language of Persia).
But wait, there's more. To gain favor with Hitler, the nation of Persia changed its name to Aryan (as in, Aryan Nation). In farsi, Aryan is spelled Iran. Hence, this is how the nation of Iran came into being.
Fast forward to today, and you've got Taliban-style bearded adherents of the Aryan Nations running around with anthrax while flying the NAZI battle flag swastika.
Could it get any wierder?!