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Handbook cover

La Salute è in voi! ("Health/Salvation is in you!") was an early 1900s bomb-making handbook associated with the Galleanisti, followers of anarchist Luigi Galleani, particularly in the United States. The anonymously written, Italian-language handbook repackaged technical content from encyclopedias and applied chemistry books into plain directions for non-technical amateurs to build explosives. It wrapped this content in a political manifesto advocating for impoverished workers to overcome their despair and commit to individual, revolutionary acts. American police and historians used the handbook to profile anarchists and imply guilt by possession. It figured prominently in the prosecution of the Bresci Circle, a case that revolved around the anarchists' right to read. Successful political bombers of this era ultimately had career backgrounds in explosives and were not the self-taught amateurs the handbook sought to create. (Full article...)

Four kiʻi at the Kāneiolouma Complex

• ... that the ancient Hawaiian village known as the Kāneiolouma Complex (pictured) is across the street from a popular beach on the island of Kauaʻi?
• ... that in Vladivostok, the Korean enclave Shinhanchon served as a hub of the Korean independence movement?
• ... that the crater lake produced by the 1628–1627 BCE eruption of Mount Aniakchak generated one of the largest floods of the last 10,000 years?
• ... that a Work for Curaçao candidate in the 2021 Curaçao general election received 427 votes despite being dead?
• ... that the Legends of Tomorrow episode "Here I Go Again" contains multiple ABBA references?
• ... that Weston Turville Castle was slighted on Henry II's orders after the Revolt of 1173–1174?
• ... that when offered a chance to repent before being burnt at the stake, one crypto-Jew allegedly told his tormentors to "throw more wood on the fire"?
• ... that according to witnesses, the plutonium charge in the bomb used in the nuclear weapons test Gerboise Verte was transported in an economy car?
• ... that Ukrainian Sheriffs went to summer school after being shot?

Michel Patrick Boisvert

• Acting prime minister of Haiti Ariel Henry resigns, and is replaced by Michel Patrick Boisvert (pictured) while the Transitional Presidential Council is sworn in.
• The Ownership, Unity and Responsibility Party, led by Prime Minister Manasseh Sogavare, wins the most seats in the Solomon Islands general election but falls short of a majority.
• NASA announces that the Voyager 1 space probe is sending readable data for the first time in five months.
• The HDZ-led coalition wins the most seats in the Croatian parliamentary election but falls short of a majority.
• Ich­thy­o­titan, the largest known marine reptile, is formally described.

May 1: Beltane and Samhain in the Northern and Southern Hemispheres, respectively; Maharashtra Day in Maharashtra, India (1960); Loyalty Day in the United States

Empire State Building

• 305 – Diocletian and Maximian retired as co-rulers of the Roman Empire, being succeeded by Galerius and Constantius Chlorus.
• 1625 – Dutch–Portuguese War: Portuguese and Spanish forces recaptured the Brazilian city of Bahia, which had previously been captured by the Dutch Republic.
• 1931 – New York City's Empire State Building (pictured), at the time the tallest building in the world, opened.
• 1941 – Citizen Kane, a widely acclaimed film by actor and director Orson Welles, premiered.
• 1945 – Second World War: British and Indian forces conducted a successful airborne assault on a Japanese artillery battery during the advance to liberate Rangoon, Burma.