Oh, snap! Reported for political sniping in Cafe Society. 
Lacedaemonian lives matter.
To most people, in most times, and most places, “freedom” has generally meant “freedom for people like me to live a lifestyle like mine”. Consequences for Other people has rarely been a consideration. Even today reformers rarely admit to any downside to their reforms.
The Spartan ruling class might very well have seen themselves as fighting on behalf of freedom of sorts. However, the reason they proclaim their commitment to freedom in the movie is to make a U.S./western audience sympathetic to them over the Persians, even though the kind of freedom that is idealized in the U.S. today is very different from the way that Spartans conceived it.
Likewise, the defenders of the Alamo are usually depicted as defending freedom (and they well may have regarded themselves as doing so), even though one of the issues that caused the Texas War of Independence was the abolition of slavery by the Mexican government. Ironically, the only people who received freedom as a direct result of the Alamo were two slaves owned by Travis and Bowie, who survived the battle and were freed by the victors.
Ooops - never mind. Didn’t read the OP closely enough.