Analysis of information sources in references of the Wikipedia article "Libertad de expresión" in Spanish language version.
Society can and does execute its own mandates ... it practises a social tyranny more formidable than many kinds of political oppression, since, though not usually upheld by such extreme penalties, it leaves fewer means of escape, penetrating much more deeply into the details of life, and enslaving the soul itself. Protection, therefore, against the tyranny of the magistrate is not enough...
In respect to all persons but those whose pecuniary circumstances make them independent of the good will of other people, opinion, on this subject, is as efficacious as law; men might as well be imprisoned, as excluded from the means of earning their bread.
Comparison may be made between Mill's ‘tyrannical majority’ and the employer who dismisses an employee for expression that it dislikes on moral grounds. The protection of employer action in these circumstances evokes Mill's concern about state tolerance of coercive means to ensure conformity with orthodox moral viewpoints and so nullify unorthodox ones.
[A] central argument for freedom of speech in On Liberty is that in order to maximize the benefits a society can gain ... it must permanently commit to restraining dominant groups from their natural inclination to demand conformity.