BUT mankind presses the limit on change in pollution, distribution of disease, etc. The end result is the release of diseases upon mankind that can decimate populations. Other time bombs include the destruction of plant live so essential to the generation of oxygen for the animal life of the planet. Out of ignorance mankind is destroying the planet. There are many concerned people who realize the danger and strive to avert the disasters.
Censorship is used by governments in war for military purposes.
And in peace censorship is often used to hide the truth from the population of wrongful acts of government. And sometimes censorship is necessary to protect the morals of the children who are the world's greatest asset. There is a need for the very positive aspects of culture to be passed on generation to generation for the benefit of future civilizations. There is a need to curtail the fringe edges of humanity that would strive to corrupt members of society. And the fringe edges are not always where they may appear to be.