A policy or law that enforces a certain behavior that contradicts culture, would, by definition be undemocratic. A policy or law that enforces a certain behavior that is already present as a strong cultural norm, would be redundant.
There is an extremely strong cultural and behavioral norm against murder. I do not find laws against it to be redundant.
Fair. Although, my point was to suggest checking the tendency of rushing into legislation. Laws are discovered, not made.