Joint suicides

Eric David Harris (April 9, 1981 – April 20, 1999) and Dylan Bennet Klebold ( KLEE-bohld; September 11, 1981 – April 20, 1999) were American high school seniors who perpetrated the Columbine High School massacre at Columbine High School on April 20, 1999 in Columbine, Colorado. Harris and Klebold killed 12 students, one teacher, and wounded 24 others. After killing most of their victims in the school's library, they died by self-inflicted gunshot wounds. At the time, it was the deadliest high school shooting in U.S. history.The ensuing media frenzy and moral panic led to "Columbine" becoming a byword for school shootings, and becoming one of the most infamous mass shootings ever perpetrated in the United States.Harris and Klebold were both born in 1981. Harris was born in Wichita, Kansas, but moved around frequently as a child due to his father's occupation in the United States Air Force, while Klebold was born and raised near Columbine. Harris's family eventually settled in Colorado in 1992. Shortly after, Harris and Klebold met while they were in the 7th grade. Over time, they became increasingly close. By the time they were juniors in high school, they were described as inseparable. There are differing reports; some say Harris and Klebold were very unpopular students once they were upperclassmen, as well as frequent targets of bullying, while others say they were not near the bottom of the school's social hierarchy and that each had many friends, along with active social lives. Columbine High School was known to have an intense "jock culture", which saw popular students, mainly athletes, benefit from special treatment from faculty and other students.According to their journal entries, Harris and Klebold had seemed to begin planning the attack by May 1998, nearly a year before the attack. Throughout the next eleven months, Harris and Klebold meticulously built explosives and gathered an arsenal of weapons. Both Harris and Klebold each left behind several journal writings and home videos, ones they made both alone and together, foreshadowing the massacre and explaining their motives. Harris and Klebold hoped this content would be viewed by the public extensively and inspire followers, although much of the evidence has never been released by authorities.
Harris and Klebold often wore trench coats in school, and in general, as part of their everyday outfits, so after the massacre, it was widely believed Harris and Klebold were part of a clique in school called the "Trenchcoat Mafia", a group of misfits in the school who supposedly rebelled against the popular students. This turned out to be untrue, as neither Harris nor Klebold had any affiliation with the group. The pair's aforementioned writings and videos gave insight into their rationale for the shooting. The FBI concluded that Harris was a psychopath, who exhibited narcissistic traits, unconstrained aggression, and a lack of empathy, while Klebold was concluded to be an angry depressive with a vengeful attitude toward individuals who he believed had mistreated him. However, neither Harris nor Klebold were formally diagnosed with any personality disorders prior to the attack, so this conclusion is often debated. In the following years, various media outlets attributed multiple motivating factors to the attack, including bullying, mental illness, racism, psychiatric medication, and violence in music, movies, and video games. Despite these conclusions, the exact motive for the attack remains inconclusive.
Harris and Klebold have become pop culture icons, with the pair often portrayed, referenced and seen in film, television, video games, music and books. Many killers since the shooting have taken inspiration from the pair (dubbed the Columbine effect), either hailing them as heroes, martyrs and gods, or expressing sympathy for them. Harris and Klebold also have a fanbase, who have coined the term "Columbiners", who write fan fiction and draw fan art of them. Others have also dressed as the duo for cosplay or Halloween.

Bernd Heinrich Wilhelm von Kleist (18 October 1777 – 21 November 1811) was a German poet, dramatist, novelist, short story writer and journalist. His best known works are the theatre plays Das Käthchen von Heilbronn, The Broken Jug, Amphitryon and Penthesilea, and the novellas Michael Kohlhaas and The Marquise of O. Kleist died by suicide together with a close female friend who was terminally ill.
The Kleist Prize, a prestigious prize for German literature, is named after him, as was the Kleist Theater in his birthplace Frankfurt an der Oder.

Kurt Badt (3 March 1890 in Berlin − 22 November 1973 in Überlingen) was a German art historian.

Mathilde Wurm (30 September 1874, Frankfurt am Main – 31 March or 1 April 1935) was a German politician, social worker and journalist. She represented the Social Democratic Party of Germany and the Independent Social Democratic Party of Germany in the Reichstag from 1920 to 1933.

Desy Lumini, best known as Daisy Lumini (18 August 1936 - 18 August 1993), was an Italian composer, singer and stage actress.
Born in Florence, at young age Lumini graduated in piano and composition, and began her career as a composer of soundtracks and songs; she later came to fame by participating in numerous Italian television shows.Lumini, who spoke five languages fluently, during her career also toured in the United States (where she participated at The Perry Como Show and sang at Carnegie Hall), France and Germany. In the sixties, after a brief period in the cabaret, she devoted herself to the research and the diffusion of Tuscan folk music, recording many albums with the popular repertoire and put it on shows with the stage company of Beppe Chierici. After working in contemporary musical theater, in the eighties Lumini started a successful collaboration with Salvatore Sciarrino, winning the Prix Italia Award in 1985. In 1993, the day of her birthday, she committed suicide along with her husband Tino Schirinzi, struck by an incurable disease, by jumping from the viaduct under construction on the Bilancino dam near Barberino di Mugello.

Jeanne-Paule Marie "Jeannine" Deckers (17 October 1933 – 29 March 1985), better known as Sœur Sourire (French for 'Smiling Sister') and often called The Singing Nun in English-speaking countries, was a Belgian singer-songwriter and a member of the Dominican Order in Belgium as Sister Luc Gabriel. She acquired widespread fame in 1963 with the release of the Belgian French song "Dominique", which topped the US Billboard Hot 100 and other charts, along with her debut album. Owing to confusion over the terms of the recording contract, she was reduced to poverty, and also experienced a crisis of faith, quitting the order, though still remaining a Catholic. She died by suicide with her lifelong partner, Annie Pécher.

Joachim Gottschalk (10 April 1904 – 6 November 1941) was a German stage and film actor during the late 1930s, a romantic lead in the style of Leslie Howard.