In the current war we fight not an ethnic group, or a race, but those who are motivated by a set of beliefs. (Although there are ethnic correlations.) This article from The Sun presents the life of one of the suspects arrested in the recent plot to bomb airplanes. He was a convert to Islam from Methodism. "Don Stewart-Whyte, 21, changed his name to Abdul Waheed and grew a bushy beard, said his neighbours." Profiling is needed, but cannot be enough because of converts such as Stewart-White. Plus, profiling is passive defense. If we are not already monitoring mosques in the West, why not?