Racism in the application of capital punishment has been well documented in the civilian justice system since the Supreme Court reinstated the penalty in 1976. Now comes evidence that racial disparity is even greater in death penalty cases in the military system.

Minority service members are more than twice as likely as whites — after accounting for the crimes’ circumstances and the victims’ race — to be sentenced to death, according to a forthcoming study co-written by David Baldus, an eminent death-penalty scholar, who died in June.

The analysis is so disturbing because the military has made sustained, often successful efforts to rid its ranks of discrimination. But even with this record, its failure to apply the death penalty fairly is more proof that capital punishment cannot be free of racism’s taint. It is capricious, barbaric and discriminatory, and should be abolished.

The number of capital cases in the military system is small: of 105 cases in which the death penalty might have been applied between 1984 — when the military revamped its death penalty process — and 2005, 15 defendants were sentenced to death. (Another capital case in 2010 was not included in the study.) Eight have since been removed from death row because of various legal errors, and two were granted clemency.