nHuman life does not have much sanctity in societies where humans are viewed as merely advanced animals:
nNazism, Marxism
obvious
nHinduism tends to put
all life on same plane.
nSecular humanism:
snail darter vs human unborn
nWe suggest this
sanctity comes from mankind being created in
GodŐs image.
nApart from this, it
is hard to justify such sanctity.