My, my. What a tyrannical 'law.' It sure would be a shame if a people were to oppose it. Would be an even bigger shame if someone were to enfore it.
The general rule is that an unconstitutional statute, though having the form and name of law, is in reality no law, but is wholly void, and ineffective for any purpose; since unconstitutionality dates from the time of its enactment, and not merely from the date of the decision so branding it.