"Of course you have freedom of speech! You just don't get to lie."
Democracy depends on having a strong sense of the value of diverse opinions. If one imagines (as the Soviets did) that one already has the final truth, and that everyone who disagrees is mad, immoral, or stupid, then why allow opposing opinions to be expressed or permit another party to exist at all? The Soviets insisted they had complete freedom of speech, they just did not allow people to lie. It is a short step, John Stuart Mill argues, from the view that one’s opponents are necessarily guided by evil intentions to the rule of what we have come to call a one-party state or what Putin today calls “managed democracy.” If universities embody the future, then we are about to take that step.
Source: Article Why College Kids Are Avoiding The Study Of Literature