Since the day President Obama took office, he has failed to bring to justice anyone responsible for the torture of terrorism suspects — an official government program conceived and carried out in the years after the attacks of Sept. 11, 2001.

He did allow his Justice Department to investigate the C.I.A.'s destruction of videotapes of torture sessions and those who may have gone beyond the torture techniques authorized by President George W. Bush. But the investigation did not lead to any charges being filed, or even any accounting of why they were not filed.

Mr. Obama has said multiple times that “we need to look forward as opposed to looking backwards,” as though the two were incompatible. They are not. The nation cannot move forward in any meaningful way without coming to terms, legally and morally, with the abhorrent acts that were authorized, given a false patina of legality, and committed by American men and women from the highest levels of government on down.

Americans have known about many of these acts for years, but the 524-page executive summary of the Senate Intelligence Committee’s report erases any lingering doubt about their depravity and illegality: In addition to new revelations of sadistic tactics like “rectal feeding,” scores of detainees were waterboarded, hung by their wrists, confined in coffins, sleep-deprived, threatened with death or brutally beaten. In November 2002, one detainee who was chained to a concrete floor died of “suspected hypothermia.”