Laws are imposed to help the common good, to peace among people who belong to a society organized under certain duties and rights.
The laws must be general, imperative, abstract and impersonal, permanent, and known to all.
Common good, justice, honesty and universality, these are the fundamental characteristics of a law. That is why those who do not comply with those values, typical of the civilization of a State governed by ethics, are not beneficial.
A country that pretends to live in peace and security requires fair laws that allow living with joy, dreams, hopes and hopes.
The laws should be easy to understand by all citizens, (like the judgments of judges), and transparent. If they are not, they become unjust laws.
The fundamental requirement of any law, which must respect human dignity to be fair.
If this does not happen it is an unjust law.