** Royal Canadian Mounted Police — accorded the status of a regiment of Dragoons in 1921 and remained so until 1937.

** Police dog

** Community Safety, Enforcement and Policing, responsible for tackling fare evasion on buses, delivering policing services that tackle crime and disorder on public transport in cooperation with the Metropolitan Police Service's Transport Operational Command Unit ( TOCU ) and the British Transport Police.

** Federal Police Force

** A federal judge sentences Los Angeles Police Department officers Stacey Koon and Laurence Powell to 30 months in prison for violating motorist Rodney King's civil rights.

** Angie Dickinson, American actress ( Police Woman )

** Reinhard Heydrich, chief of the Security Police, sent a directive, the Schnellbrief, explaining that Jews living in towns and villages in the Polish occupation zones were to be transferred to ghettos, and Jewish councils – Judenräte – would be established to carry out the German authorities ’ orders.

** Wilhelm Rediess, SS and Police Leader of Nazi-occupied Norway ( suicide ) ( b. 1900 )

** Ernst Kaltenbrunner, German Nazi Police General ( b. 1903 )

** Police seal off Brixton in South London after another night of protests against the poll tax.

** J. D. Tippit, American police officer with the Dallas Police Department ( b. 1924 )

** Vietnam War: A Viet Cong officer named Nguyễn Văn Lém is executed by Nguyễn Ngọc Loan, a South Vietnamese National Police Chief.

** Winnipeg General Strike: Royal Northwest Mounted Police fire a volley of bullets into a crowd of unemployed war veterans, killing two.

** The Chicago Police Department shoot and kill ten unarmed demonstrators in Chicago in what is known as the Memorial Day massacre.

** The Canadian Parliament establishes the North-West Mounted Police ( which is renamed the Royal Canadian Mounted Police in 1920 ).

** Police find a girl's body on Saddleworth Moor near Oldham in Lancashire.

** Police discover the body of Sylvia Likens in Indianapolis, Indiana.

** Greater Manchester Police recover the body of 16-year-old Pauline Reade from Saddleworth Moor, after her killers Ian Brady and Myra Hindley helped them in their search, almost exactly 24 years since Pauline was last seen alive.

** Greater Manchester Police announce that they are to search for the bodies of 2 missing children ( who both vanished more than 20 years ago ) after the Moors Murderers Ian Brady and Myra Hindley confess to 2 more murders.

** In Namibia, fighting erupts between SWAPO guerillas and the South West African Police, on the day that a cease-fire was supposed to end the South African Border War according to United Nations Security Council Resolution 435.

** Riots break out between New South Wales Police and Aboriginal residents of Redfern, New South Wales, a suburb of Sydney, Australia.

** Police

** Peel Regional Police

** Atlas Autocode, a programming language developed for the Atlas Computer

** Stone's representation theorem for Boolean algebras needs the Boolean prime ideal theorem.

** Gödel's completeness theorem for first-order logic: every consistent set of first-order sentences has a completion.

** Altenberg bobsleigh, luge, and skeleton track, a venue for bobsleigh, luge and skeleton located in Altenberg, Saxony

** Altenberg, the German name for Vieille Montagne (" old mountain " in French ), the former zinc mine in Kelmis, Moresnet

**. am, Internet domain for Armenia

** Display aspect ratio-The aspect ratio for computer displays.

** Basil Fool for Christ ( Russian Orthodox Church )

** Raptio, large scale abduction of women, either for marriage or enslavement

** Lollia Paulina as she was a rival for Claudius ’ hand in marriage as proposed by the freedman Callistus.

** Sosibius Britannicus ’ tutor executed for plotting against Nero.

** World Day for Safety and Health at Work ( International )

** Ludwig Radermacher, Artium Scriptores, Vienna, 1951, pp. 200 – 202 ( rhetorical fragments only, adding Philodemus ' Rhetorica, which accounts for three of the nine fragments printed )

** ( Actual approximately − 11. 0 ) The diffuse reflector formula does for smaller phases.

** Minimum level required for POWER4 hardware and the last release that worked on the Micro Channel architecture

** The L stands for Linux affinity

** Support for mirroring with striping

** LVM ( Logical Volume Manager ) was incorporated into OSF / 1, and in 1995 for HP-UX, and the Linux LVM implementation is similar to the HP-UX LVM implementation.

** Theater for Social Change

** howitzers: capable of high angle fire, they are most often employed for indirect-fire.

** mortars: typically short-barreled, high-trajectory weapons designed primarily for an indirect-fire role.

** anti-tank artillery: weapons, usually mobile, designed for attacking tanks.

** anti-aircraft artillery: weapons, usually mobile, designed for attacking aircraft from the ground.

** Chromatic aberration, caused by differences in refractive index for different wavelengths of light

** The latest possible date for Easter Sunday, last in 1943.