How did freedom of speech change during World War 1?

During World War I, freedom of speech underwent significant restrictions in many countries, particularly in the United States and Britain. Governments enacted laws such as the Espionage Act of 1917 and the Sedition Act of 1918 in the U.S., which criminalized dissent and criticism of the war effort. Censorship increased, and anti-war activists and pacifists faced persecution, leading to a climate of fear that stifled public discourse. These measures reflected the prioritization of national security over civil liberties during the wartime period.