In Book VI, they discuss population groups and the issue of slaves is discussed. The Athenian points out how troublesome the Helots are because they revolt. He claims a government will be better off if it treats its slaves with as much respect as equals receive.
He also agrees with the Spartans that a city should not have walls, because their presence, “is also apt to produce a certain effeminacy in the minds of the inhabitants, inviting men to run thither instead of repelling their enemies, and leading them to imagine that their safety is due not to their keeping guard day and night.”
Plato is critical of the Cretans and the Spartans for having no Mess for women, because women need to be subject to laws just like men are.
These are the opinions of Sparta as expressed in Laws.