Thoughts by others
I think these are relevant. Trust to Picard to put it succintly.
With the first link, a chain is forged. The first speech censured, the first thought forbidden, the first freedom denied, chains us all irrevocably. - Picard, ST:TNG, quoting a fictional judge, The Drumhead
Men fear thought as they fear nothing else on earth, more than ruin, more even than death... Thought is subversive and revolutionary, destructive and terrible, thought is merciless to privilege, established institutions, and comfortable habit. Thought looks into the pit of hell and is not afraid. Thought is great and swift and free, the light of the world, and the chief glory of man. - Bertrand Russell
Necessity is the plea of every infringement of human freedom. It is the argument of tyrants; it is the creed of slaves. - William Pitt
Experience should teach us to be most on our guard to protect liberty when the Government's purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evilminded rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, wellmeaning but without understanding. - Justice Louis D. Brandeis
The First Amendment is often inconvenient. But that is besides the point. Inconvenience does not absolve the government of its obligation to tolerate speech. - Justice Anthony Kennedy
~Raithere
Sorry to just give quotations but if I actually enter this issue I'll have to start taking heads.