They are dedicated to the destruction of technology and ultimately the human race. I think that many of them actually want to see the end of humanity, or at least a regression to the stone age.
But are they really terrorists? Some posters here seem to think so and some comments I think are a bit over the top (string em up, shoot em, etc...)
They are a criminal gang and need to be prosecuted for arson, vandalism, etc...I would hope that the FBI would be smart enough to plant or pay an informer over there in Oregon or among the Peta/ALF/ELF/Earth First!, types.