Writer Peter Jamison, who is based in San Francisco, where the cop killing occurred, spent months working on the story and developed many different sources of information. Jamison, who can't be dismissed as a right-winger pursuing a partisan agenda designed to make Obama look bad, examined the evidence in the 1970 Park Police Station bombing case. He finds that it goes straight to Dohrn and other members of the Weather Underground, including her husband, fellow terrorist Bill Ayers, now a professor of education at the University of Illinois.

His article is being syndicated by Village Voice Media, a source of news and information for newsweeklies in several major U.S. cities. The outlets include the SF Weekly in San Francisco, the Miami New Times, and the St. Louis Riverfront Times.

The story is actually an old one, and Accuracy in Media had publicized some of the evidence in the case before the 2008 presidential election, when the media were repeating the lie that the Weather Underground had never killed anyone with their campaign of violence.

The new evidence in the case developed by Jamison adds to the solid information already available and raises the question of when, if ever, the bombers will be prosecuted. There are other witnesses to the bombing plot.

He reports, "Now, speaking publicly for the first time about the investigation, former FBI agents have told Village Voice Media the basis for their belief that the Weather Underground was behind McDonnell's murder. Another lie peddled by Ayers and Dohrn is that they bombed buildings because they were against the Vietnam War. In fact, they were pro-war and in favor of the communists conquering South Vietnam. One of their communist manifestos was dedicated to Sirhan Sirhan, the assassin of anti-war candidate Robert F. Kennedy.

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But the feds also have a role. Attorney General Eric Holder, who played a role in the Clinton pardons of Weather Underground members, may be reluctant to prosecute former political associates of the President, but if the FBI pursues the case and brings the evidence forward, there may be no other alternative.

If President Obama himself wants to see justice done-and he claims he didn't agree with the Weather Underground's campaign of violence and bombings-it would be easy enough for him to order Holder to bring forth all of the available evidence in the case.

I launched a "Campaign for Justice for Victims of Weather Underground Terrorism" earlier this year. The new information developed by Jamison suggests that justice may finally be done, if law enforcement authorities get the support they need at all levels of government, including in Washington, D.C.