It culminated in the deportation of 249 persons, including Alexander Berkman and Emma Goldman.  
During this nicknamed period, Herbert Warner's testimony led to a six- month prison sentence for Joseph Yenowsky, and Samuel Hagerman received an ovation from an assembled crowd after shooting George Goddard three times.  A bomb plot uncovered after a shipyard strike in Seattle and the declaration of martial law in Gary, Indiana fueled the paranoia, and it led to the founding of the American Legion.  It culminated in the deportation of 249 persons, including Alexander Berkman and Emma Goldman.  For 10 points, identify this period lasting from approximately 1917 to 1921, which saw mass irrational panic regarding the infiltration of Communism into American life.
During this nicknamed period, Herbert Warner's testimony led to a six- month prison sentence for Joseph Yenowsky, and Samuel Hagerman received an ovation from an assembled crowd after shooting George Goddard three times.  
(First) “{Red Scare}”