Like the post office or public libraries.
I pretty much believe those concepts work for almost all situations, but sometimes they do not. For me the practicals of the matter are more important than the ideals of it and these ideals are great when they do promote what they are trying to. However, sometimes they oppose something that would promote more life and liberty (a healthy population pretty much covers both of those things). But no logical system can ever account for every possible thing, so sometimes we need to help it along with exceptions.