Greece’s debt crisis

Greenwood was a flourishing and prosperous black neighbourhood of Tulsa, often referred to as Black Wall Street. But in May 1921, a white mob descended on the district, destroying homes, businesses and lives. In this Witness History, Josephine Casserly talks to historian John W. Franklin, of Franklin Global, about the story of his grandfather, Buck Franklin, who survived the massacre. The words of Buck Franklin are voiced by Stefan Adegbola.Image: An African-American man with a camera examining the ashes of a burned-out block after the Tulsa Race Massacre. Credit: Oklahoma Historical Society/Getty Images

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On May 31st 1986 a small group of musicians staged the first charity rock concert ever held in the USSR. It was organised in less than two weeks to raise money for the victims of the Chernobyl disaster. The nuclear reactor accident had happened just a month before in Ukraine. Some of the artists who played at the concert had been previously banned by the Soviet authorities, so the concert was a social revolution, as organiser - Artemy Troitsky explains to Rebecca Kesby.(PHOTO Credit Sputnik: 1986 Charity concert arranged to raise funds for accident management at the Chernobyl power station. Olimpiysky sports complex.)

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In the 1960s and 70s, Amilcar Cabral led the armed struggle to end Portuguese colonial rule in Guinea Bissau and Cape Verde in West Africa. Cabral was an unusual rebel leader. He was an agricultural engineer, writer and poet who founded the liberation movement, the PAIGC, in 1956 to end Portuguese rule of his home country. In Guinea Bissau, the PAIGC fought a successful guerrilla war against a much larger Portuguese army. But Cabral was assassinated shortly before Portugal officially conceded independence in 1974. Alex Last spoke to former liberation fighter, Commander Manuel dos Santos about the struggle and his memories of Amilcar Cabral.(Photo: Rebel soldiers on patrol in Guinea Bissau during the Portuguese Colonial War in West Africa, 1972. Credit: Reg Lancaster/Express/Hulton Archive/Getty Images)

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Despite opposition from her father, Lotfia Elnadi was determined to realise her dream to fly. With her mother's consent, she secretly took flying lessons from an English instructor at a small airfield in the desert outside Cairo. And in September 1933 she made history by becoming the first female pilot in the Arab world. Mike Lanchin has been hearing from the Egyptian film-maker and writer Wageh George who interviewed Lotfia at the end of her long life for a film about her amazing achievement entitled 'Take Off From The Sand'.Photo credit: AlamyArchive of Lotfia Elnadi from 'Take Off From The Sand'

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When one and a half million Indian railway workers went on strike for 20 days in 1974 it brought the country to a halt. Essential food, goods and workers were unable to reach their destinations. Despite this, the general public were largely sympathetic to the strike as they too felt a sense of anger at the government over the economy and allegations of corruption. Claire Bowes has been talking to union leader Subhash Malgi about why the government attempt to prevent the action with mass arrests and harassment backfired and to author Stephen Sherlock about how it became - what was at the time - the biggest strike in history and led to Prime Minister Indira Gandhi's declaration the following year of a national state of emergency.Photo: Train from Darjeeling to Siliguri 1970. Credit: Paolo KOCH/Gamma-Rapho via Getty Images

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In 2009 a war crimes trial in Sierra Leone ruled that forced marriage was a crime against humanity. It was the first time a court had recognised that charge. The ruling came in a trial of three rebel leaders for crimes committed during Sierra Leone's civil war. The legal turning point came largely as a result of the testimonies of the women who had been victims. The prosecution argued that forced marriage should be considered a crime against humanity distinct from other forms of sexual violence. Farhana Haider has been speaking to the former chief prosecutor Stephen Rapp about the trials.Photo: Sierra Leone, repatriated refugees reaching Freetown January 2001 Credit: Ullstein Bild/Getty Images

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Iran hosted a meeting to save the world's wetlands in 1971. The Ramsar Convention - named after the village on the Caspian Sea where it was originally signed - is seen as the first of the modem global intergovernmental treaties on the sustainable use of natural resources. Claire Bowes has been speaking to the Belgian representative, Eckhart Kuijken, about the battle by conservationists to interest people and governments in the value of wetlands. He describes how his home country had no planning laws protecting natural landscapes until 1962 - so that many were lost to industry and agriculture.Photo: Hawizeh Marsh in Iran. Credit: courtesy of the Convention on Wetlands

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There were strikes and student protests across South Korea in May 1980. The military government responded with a brutal crackdown in the city of Gwangju and elsewhere striking workers faced arrest and even torture. Heongjun Park has been hearing from one of those strikers, Bae Ok Byoung, who worked in a factory making wigs in Seoul. She, and the other female employees had gone on strike demanding better working conditions, but after the industrial action ended she was jailed, tortured and then blacklisted for decades. This is a 2 Degrees West production. Photo: Labour activist Bae Ok Byoung talking to some of the workers at the wig factory in Seoul where she worked in 1980.

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