Espionage and Sedition Acts,
private surveillance.
spying on neighbors
carrying out slacker raids.
German foods such as hamburgers and saurkraut had their names changed to "liberty sandwich," and liberty cabbage."
Persons suspected of loyalty were forced to kiss the American flag in public.
Randolph Bourne predicted that the war would empower not reformer but " the least democratic forces in American Life"
Hope this helps.