Biography
Carlo Tresca was an Italian-American anarchist, syndicalist, orator, and newspaper editor who became one of the most prominent radical labor agitators in the United States. A leader of the Industrial Workers of the World during the 1910s, he helped lead the Lawrence (1912) and Paterson (1913) textile strikes and the 1916 Mesabi Range iron miners' strike in Minnesota, where he and other organizers were jailed for months on an accessory-to-murder charge arising from the strike that ultimately collapsed without trial. As editor of the anti-fascist weekly Il Martello ('The Hammer'), he became a leading voice against Mussolini's regime in America; at the behest of the Italian government, federal authorities prosecuted him for a two-line birth-control advertisement and he served about four months in the Atlanta federal penitentiary in 1925 before public outcry forced President Calvin Coolidge to commute the sentence to four months. A fierce opponent of both fascism and Stalinism, Tresca was assassinated on a Manhattan street corner on January 11, 1943, in a killing widely attributed to the Mafia and never officially solved.
The June 8 report describes Tresca’s completed release after bail was raised to $2,500 when he waived examination the previous day. It attributes the assault and kidnapping accusations to the anti-Fascist dispute and records his claim that Giacoma Caldora had lured him into Fascist headquarters. Those are competing allegations, not findings. This is a distinct 1927 episode, without an exact personal intake or completed detention total. Source: https://www.marxists.org/history/usa/pubs/dailyworker/1927/1927-ny/v04-n124-NY-jun-08-1927-DW-LOC.pdf#page=5
1920s release-date review: Tresca's physical release was May 7, 1925, not May 5. The February 16 commutation shortened his sentence to four months and did not itself release him. Earlier Mesabi custody endpoints remain separately under review.
Source: Pitzer College Anarchy Archives, Tresca chronology, entries for February 16 and May 7-8, 1925, citing Nunzio Pernicone's biography, pages 158-159.
1920s remaining-entry review: Nunzio Pernicone, Carlo Tresca: Portrait of a Rebel, pages 156 and 159, describes handcuffed departure from Pennsylvania Station on January 5, 1925, prison entry two days later, and release May 7. January 5 denotes custody including transport; it is not Atlanta intake. The 122-day interval includes those two transport days. No earlier or later detention is included.