I'm not sure what perspective Saudi Arabia's laws give us. In Saudi Arabia homosexuality is punishable by death, does that give us any perspective of how they should be treated here?
I for once would pick living amongst a disorganized mob who would lynch me upon suspicion of doing something that I also consider unjust, over an organized society that would punish me, through the best procedures, for something that I find my fundamental right.
Neither case is ideal, obviously, but it's better for a society to miss procedures than a sense of individual rights.
Also, I think it is far easier for a society to build procedures/laws than change radically its perceptions on what is right and what is wrong.