It is incontrovertible that Obama has no formal relationship with Ayers. Ayers is not an official advisor, informal advisor, confidant or, in the parlance of the day, a pal. Contrast Ayers' non-relation to Obama with that of, say, Henry Kissinger. As Campos recounts, "Kissinger is honorary co-chair of McCain's New York campaign, and a foreign policy adviser to McCain himself."
Now let's compare some of the terrorist activities of, on the one hand, non-advisor, non-related William Ayers and, on the other hand, official adviser and honorary co-chair Henry Kissinger. Ayers:
...[A]s a member of the Weather Underground, [Ayers] set off several bombs that did some serious property damage. None of the bombings Ayers was involved with killed anyone, but several years later other members of the group took part in an armed robbery in which two police officers and a guard were killed.
An abbreviated list of the events that have made it dangerous for Kissinger to travel overseas, because of the possibility he would be arrested as a war criminal, include: covertly sabotaging Vietnam peace talks in 1968 in order to help get Richard Nixon elected; playing a key role in convincing Nixon to launch illegal wars in Laos and Cambodia (the latter action helped create the conditions that led to the Cambodian genocide); helping to plan the overthrow of Chile's democratically elected government, which included numerous assassinations funded by the CIA (again, all this in direct violation of international law); and helping to facilitate the Indonesian invasion of East Timor, which may have killed as many as 200,000 civilians.
Kissinger appears to have had every bit as much contempt for the law as Ayers, with the difference being that his brand of contempt led to millions of deaths.
Read it all.