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![](https://www.osce.org/files/imagecache/00_xlarge/f/images/web/8/d/3254.jpg?1517308930)
A Spanish policeman walks past a hole in a train after an explosion at Madrid's Atocha station, 11 March 2004. Nearly 200 people were killed and more than 1,400 injured in simultaneous blasts.
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