While thinking about the Adams/Jefferson post from a couple of days ago, I remembered something I had read about Woodrow Wilson trampling the rights of citizens. In the spring of 1917, Wilson had finally decided that the U.S. had to get involved in the war in Europe, but he feared that many citizens, especially immigrants, wouldn't support his decision. The largest immigrant groups at the time were German-Americans, followed by Irish-Americans. Wilson said "Any man who carries a hyphen around with him carries a dagger that he is ready to plunge into the vitals of the republic."
The passage of the Espionage Act made it a crime to "willfully obstruct the recruiting or enlistment service" of the U.S. and to "utter, print, write, or publish any disloyal, profane, scurrilous, or abusive language about the form of government of the United States, or the military or naval forces of the United States, or the flag." It also made it a crime to teach, suggest, defend, or advocate any criticism of the government and gave the Postmaster the right to refuse delivery of any periodical he deemed unpatriotic or critical of the administration.
Republican Senator Robert La Follette voted against Wilson's declaration of war, prompting one warhawk Senator to call him a "pusillanimous, degenerate coward" for not supporting the President (Toby Keith would've written a song about it). La Follette delivered a strong defense of free speech, even during wartime, prompting the Senate to launch an investigation of possible treasonable conduct, which after the war was dismissed.
And this was the era where Wilson's Committee on Public Information, headed by publicist George Creel, encouraged people to spy on one another and report disloyal "pro-German" sentiment. Oh, and they started calling sauerkraut "victory cabbage." (Freedom fries?)
Using war as an excuse to silence opposition is nothing new, after all. It doesn't make it right, and in hindsight, usually is looked upon as a blot on our nation's history.
In the words of Mark Twain, "Patriotism is supporting your country all the time, and your government when it deserves it."