Even unenforceable laws have great benefit to the ruling class. Any law communicates to the masses that rights are not natural, but are granted by the authorities. Laws remind the masses that they live under the rule of others. Laws also create such a vast array of the unallowable, that if the authorities ever decide to target a particular person or group, almost anything will be within the purview of prosecution.
Discussion
Legal establishment has been altered from a system of advocacy for sociability and protection of the weak from the strong, to a system that serves the strong at the expense of the weak.