Tulsans working on events commemorating the 1921 Race Massacre say a dispute over monetary payments to survivors led to the cancellation of a headline event.

The deal between Dearborn and Kevin Matthews' family came weeks after the Dearborn officer, Chris Hampton, 33, killed himself. Read back: Prosecutor: Dearborn officer won’t face charges for man’s deadly shooting last yearMatthews, 35, had a history of mental illness and was recovering from a broken arm. AdCrime scene and ballistics experts hired by Matthews' family said the officer's explanation didn't add up. Matthews' family “wants to move forward," he said. Ad“Had this been on a body camera, there’s no doubt that Officer Hampton would have been prosecuted,” Greenman said.