There was relatively little freedom in Sparta. Their society was rigid, strict and there was no tolerance for anyone who disagreed with the Military State. Males were required to serve in the military for life, women required to birth the future warriors. Men and women were educated only in the narrowest of subjects, as they pertained to war and battle. Their belief was that an educated woman would produce a cunning and smart warrior. Male children were separated from their parents at seven-years-old, and began their Agoge (a program where the child was indoctrinated in devotion to the State and military training). This was required of all male children, except for the sons of the Kings, since they were considered gods.
Sparta, as a society, did not produce literature, art, architecture or other advancements that we associate with great civilizations of the ancient world. The Athenians, the Egyptians, the Etruscans and the Persians possessed a far more advanced culture and civilization with more freedom and liberty for their citizens. Even the other Greek city-states viewed the Spartans as backward and primitive. The Spartans seldom wrote anything down. There is scant written documentation from their society.
The Helots, descendants of an earlier conquered race of inhabitants of the region of Laconia, where Sparta was located, were enslaved and forced to labor on large estates. When Spartan warriors were in shortage, Helots were forced into the military. They were slaves-for-life, never able to buy their freedom or earning it as a soldier. They were severely mistreated, beaten, tortured and the women sometimes raped(the offspring of these rapes, if they were male, were taken from the mother and raised to be soldiers). When a unit of Helots fought bravely in a battle, they were given honors and accolades...then killed later that night. The Spartans feared these slaves, who far outnumbered their masters, would rise up against them. After years of abuse and oppression, the Helots revolted against the Spartans when a earthquake devastated the region. {See here for more information.}
In spite of all this, Sparta and the other Greek city-states were still more "free" than any state under Persian domination. Classicist and military historian Victor Davis Hanson, who previewed the film and wrote a foreward for a movie tie-in book, says in his article "300: Fact or Fiction," that the film still "mostly conveys the message of Thermopylae."
"True, 2,500 years ago, almost every society in the ancient Mediterranean world had slaves. And all relegated women to a relatively inferior position. Sparta turned the entire region of Messenia into a dependent serf state." But he goes on to say that, "in the Greek polis alone, there were elected governments, ranging from the constitutional oligarchy at Sparta to much broader-based voting in states like Athens and Thespiae.
"Most importantly, only in Greece was there a constant tradition of unfettered expression and self-criticism," unlike the Persian Empire, where speaking against official policy of the emperor--a living god--was blasphemy." Aristophanes, Sophocles and Plato questioned the subordinate position of women. Alcidamas lamented the notion of slavery.
"Such openness was found nowhere else in the ancient Mediterranean world. That freedom of expression explains why we rightly consider the ancient Greeks as the founders of our present Western civilization."
(Read the full '300: Fact or Fiction' article here.)