The most effective censorship is not, in fact, legal; in a democracy—as Tocqueville pointed out in Democracy in America—it is public opinion. - Henry Steele Commager

Who are those who are really disloyal? Those who inflame racial hatreds, who sow religious and class dissensions. Those who subvert the Constitution by violating the freedom of the ballot box. Those who make a mockery of majority rule by the use of the filibuster. Those who impair democracy by denying equal educational facilities. Those who frustrate justice by lynch law or by making a farce of jury trials. Those who deny freedom of speech and of the press and of assembly. Those who press for special favors against the interest of the commonwealth. Those who regard public office as a source of private gain. Those who would exalt the military over the civil. Those who for selfish and private purposes stir up national antagonisms and expose the world to the ruin of war.

Uncertain of principles, we fall back on emotion; unfamiliar with the past, we are afraid of the future. Increasingly we look to men, ideas, and institutions not from the point of view of how they work, but from the point of view of how they ought to work…

By insisting upon conformity in the intellectual arena and by threatening with disapproval all those who dissent or who give us unpopular advice, we are in danger of following the totalitarian philosophy—and the totalitarian mistakes.