Ladder
Ladder: shutdowns and blocking, in North America

A government cuts internet or mobile telephone service, blocks news websites or social media platforms, or jams radio and television signals, so that audiences cannot receive news and reporters cannot send it out.
The number of entries reflects the depth of this record, not the severity of a country's conduct.
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3Punish
Legal or physical action against individual journalists or sources: subpoenas and record seizures, prosecutions, arrests, detention, expulsions, visa denials, assault where a government actor is involved.
Emma Goldman, editor of the anarchist magazine Mother Earth, was convicted with fellow anarchist Alexander Berkman of conspiring against the newly enacted Selective Draft Law and received the maximum two year sentence and a ten thousand dollar fine.
Upheld by a court 14 January 1918 · 2 sources · Full entry
4Silence
Removing outlets or channels from the public sphere: closures, licence withdrawals, forced sales, blocking and shutdowns, prior restraint, nationalisation.
Postmaster General Albert Burleson used the wartime Espionage Act to strip the Milwaukee Leader, a socialist daily, of its low-cost second-class mailing rate, cutting off its main channel to readers.
Upheld by a court 7 March 1921 · 2 sources · Full entry
Weeks after the United States entered the First World War, the New York postmaster used the new Espionage Act, a law against interfering with military recruitment, to bar the socialist magazine The Masses from the mail.
Upheld by a court 1 November 1917 · 2 sources · Full entry
All ladders · Shutdowns and blocking: by country and year · The United States chapter