All of us tend to define "terrorist" in line with our own agenda.

But under Bush we had the anthrax letters, the DC snipers, the 2002 attack against the El Al counter in LA, the attempted shoe bomber attack by Richard Reid, and the 2006 UNC attack by Mohammed Reza Taheri-azar who ran down pedestrians on campus in order to avenge what he saw as wrongful killings around the world. And of course we had 9-11...

"When the snows fall and the white winds blow, the lone wolf dies but the pack survives."
Winter is Coming

Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die.
As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.