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In 1984, a 21-year-old Irish shopworker refused to serve a customer buying two South African grapefruits. Mary Manning was suspended from the Dunnes store in Dublin, and ten of her colleagues walked out alongside her in protest.

It was the start of a strike that lasted almost three years, and ended when Ireland became the first western country to impose a complete ban of South African imports.

Why did Mary do it? In 1984, she and her colleagues were part of the Irish workers\u2019 union, IDATU, which had told its members not to sell items from South Africa.

At the time the 11 strikers knew little about apartheid \u2013 South Africa\u2019s system of racial segregation - but they soon learnt.

Their protest would lead to them addressing the United Nations, winning praise from Bishop Desmond Tutu, and meeting with Nelson Mandela.

Mary tells Jane Wilkinson about what drove the strikers to continue despite little initial support.

Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more.

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(Photo: Strikers outside Dunnes store in Dublin in 1985. Credit: Derek Speirs)