Agreed. However, the Spartans were exceptional in their brutality even for the time. Although they never had any intent of conquering the world, they implemented Nazi-type practices in their small corner of it about as completely as any group ever has.
Actually, most all peoples before the development of Christianity and Islam had a master race mentality. They only differed about which group was supposed to be the master. :)
My impression is that Islam always did, and still has, a master race mentality.
I highly recommend the book "Civilization and its Enemies" by Lee Harris. He discusses the Spartans at length and draws some interesting conclusions.
Actually, most all peoples before the development of Christianity and Islam had a master race mentality.