The concentration camps of the Nazi regime have become a particularly potent symbol of modern death and dying. There is nothing directly sinister about such camps: their purpose is to bring together particular kinds of people, but once they are together it is not difficult for a regime which is antagonistic to them to take negative measures accordingly. Many of the concentration camps in the Nazi period contained extermination facilities, or were linked with such facilities, and millions of Jews, gypsies, Slavs and anyone who did not find an acceptable place within the National Socialist ideology were murdered there.