The Shaoyi Genocide

Trigger warning, violence and rape
Victoria is a well-known geopolitical player on Luna, but Shaoyi is a forgotten stain on the nation's storied history. Shaoyi was a small Chinese colony on the island of Victoria. It was rather close to the Republic of Victoria and was seen as a hindrance to the latter's ambitions.
In 1967, the fledging state lost all backing from its Terran Allies following an escalation of the ongoing Chinese Civil War. The many warlords and two major states, too busy with their own problems to focus on a forgotten and increasingly expensive ambition.
Seeing a rare opportunity, the Victorians took advantage, as Shaoyi's presence was in its sphere of influence. 11 years, 3 wars, and 5 border disputes later a tense relationship had turned to idealistic and racist hatred. A final conflict in 1978 would spell the end for the state of Shaoyi. Years of war had reduced Shaoyi to a fragment of former self, while the Victorian military had grown into a racist and nationalist army hellbent on the annihilation of the people and state of Shaoyi.
During a siege of the capital, the troops went on a rampage backed by idealistic, racist, and religious (some accounts state) fervor. Of the remaining population, 80% would be massacred, slaughtered, and raped. As for the surviving victims most that could not flee were subject to mass rapes and burnings, the city itself was pillaged and razed to the ground. 
Contemporary historians cite this as the first case of genocide on the moon otherwise known as the First Lunar Genocide, Shaoyi Genocide, or Rape of Shaoyi. Still today both the British and Victorian governments refuse to acknowledge the Rape of Shaoyi. Recently many authors have become famous for their descriptions, accounts from descendants, and translations of texts found 200 years later.