Human rights are so important for Humanity because their meaning and intention to make the world a better place accepting an universal way of think based on equality and respect.
But some persons could not respect them because they could difficult or close some works.
Firstly, because in those countries, where there are slavery yet, rich people won't respect these rights because if they do it they'll lose a fortune. Humans are egoist, like all animals everywe wants to satisfy our wishes. We'll adapt them to the rules and laws to avoid punishments, but if that punishment it's just to be looked like a bad man or to see the pain of another person we could just ignore it.
Secondly, because our laws and rights can be looked like just ways of think, and everyone has a different mentality but society and especially our parents are who tells us what's wrong and what's right. If this point failures, the child could get his own etical mind and to don't care about that respected and globally accepted laws.
Thirdly, because I think that if we'd get a better education, if all of our parents would have gone to a "education school" or just have a more relative mentality, their children would have been more adapted to the society and respectfull with the other people.
In conclusion, I think that laws and rights should have been like a father's voice for all us. They should intimidate us and shows us what's "really" wrong with respected, particular and accepted arguments. If they're published for everyone and taughts us (by our parents, teachers and important people for us), they could be more respected.