It has become known as the first genocide of the 20th century: tens of thousands of men, women and children shot, starved, and tortured to death by German troops as they put down rebellious tribes in what is now Namibia. For more than a century the atrocities have been largely forgotten in Europe, and often in much of Africa too.

Now a series of events – and a policy U-turn by Berlin – is raising the international profile of the massacre of Herero and Namaqua peoples and bringing justice for their descendants a little closer. Negotiations between the German and Namibian governments over possible reparation payments are expected to be completed and result in an official apology before next June.

In Berlin a major new exhibition about the country’s bloody colonial history opened earlier this winter. It features letters from missionaries expressing their concerns about concentration camps and killings in Germany’s south-west African colony.