"And though all the winds of doctrine were let loose to play upon the Earth, so truth be in the field, we do injuriously by licensing and prohibiting to misdoubt her strength. Let her and falsehood grapple; who ever knew truth put to the worst, in a free and open encounter?" -John Milton, Areopagitica
"Every difference of opinion is not a difference of principle. We have called by different names brethren of the same principle. We are all republicans, we are all federalists. If there be any among us who would wish to dissolve this Union or to change its Republican form, let them stand undisturbed as monuments to the safety with which error of opinion may be tolerated where reason is left free to combat it." -Thomas Jefferson 1801 Inaugural
Hence the reason people of my persuasion don't burn books, issue Indexes of Prohibited Books, and why we don't ask for apology and censorship of everything that offends us. Bill Donahue, CAIR, ect. If was driven to apoplexy every time someone said something untoward about atheists I don't think I'd be able to get out of bed.