In principle, not following an unjust law is a moral obligation. Yes, you can argue the edge cases. I also agree that there's some good in obeying a particular

In principle, not following an unjust law is a moral obligation. Yes, you can argue the edge cases. I also agree that there's some good in obeying a particular law even if it is a little bad (to uphold respect for law in general). This doesn't refute the general principle though - unjust laws should be broken. Historically enough repulsive stuff was mandated by law.