According to Sol Stern, it's not his (literal) bomb-throwing past but his (figurative) bomb-throwing present:
Instead of planting bombs in public buildings, Ayers now works to indoctrinate America's future teachers in the revolutionary cause, urging them to pass on the lessons to their public school students.... As Ayers puts it in one of his course descriptions, prospective K-12 teachers need to "be aware of the social and moral universe we inhabit and... be a teacher capable of hope and struggle, outrage and action, a teacher teaching for social justice and liberation."
Nor is his thinking outside the "mainstream" of the ed school professoriate; Stern reports that Ayers was recently elected Vice President for Curriculum of the American Educational Research Association. Perfect.
