Controlling this speech only ignores that there are some people in our world who live in conditions that would be unfit for humans, under most circumstances. In essence, the social contract is validated, since all citizens should live in humane condition. The inability to handle a problem does not cause it to disappear. The desire not to know about some societal wrong does not negate the opportunity of others to tell the story. For how else would the truth be known unless someone brings it to the forefront.
Freedom of expression is vital to the attainment of truth and the advancement of knowledge.
We must agree that if one is to make a conscious and accurate judgment that it is only possible if all facts are considered. Antoher reason freedom of speech is necessary to our society is to ensure that everyone has access to all information, ideas and points of views. It would be very easy for the government to act with tyranny if the people were uninformed masses of ignorance. However, the people are truly sovereign if all information is readily and openly available for their scrutiny. Finally, freedom of expression provides a social control function that ensures against any possible corruption and abuse within the government.