so if somebody ordered 6 tons of fertilizer no big deal. but if they advocate vilolence that is a significant thing. we have something in the united states called significant activity reporting. when law enforcement observe ofs something that's weird. we are trying to collect all that stuff in and cross-reference it. alisyn: this guy is incensed about the influx of muslim immigrant to norway and he wanted to start a revolution. how rampant is this right-wing extremeism in europe or norway right now. >> trite-wing and left-wing extremeism are fads that come and go. we have seen in the past. we saw insurgents in the 1980s. it has nothing to do with islamism and the war on terror and 9/11. it's much more to do with the fact that the european pop lake has been growing very slowly. most of the immigrants have been