The Tulsa Race Massacre of 1921 is considered one of the darkest chapters in American history, marked by the systematic annihilation of a Black community in Greenwood, Tulsa, Oklahoma.

The deadly 1921 rampage was a coordinated, military-style effort to destroy a prosperous Black neighborhood, a new report says.

The Justice Department’s conclusion follows an investigation of the 1921 atrocity in Oklahoma in which up to 300 Black residents were killed.