The Martian Genocide

The Martian Genocide was an event taking place between April and July of the year 2031, in which 90% of the Martian population (~2,475 people at the time) disappeared or otherwise died. Though no one necessarily knows who committed the crime, the charge was placed upon Elon Musk, an eccentric billionaire who created the Mars colonies, by the Supreme Court of the United States of America.