The Kashyyyk Massacre was an atrocity instigated by Greiko Lornan on Kashyyyk in 12 ABY. After the departure of Danik Kreldin and Fianar Reanus from the Neo-Imperial Movement, Greiko took control over the organization and drastically turned the Movement's goals around; rather than fighting the war against the Galactic Empire, Greiko waged a terror campaign against the New Republic and its allies, starting with Kashyyyk.