Two teachers raise quite obvious questions as to why commie serial bomber Bill Ayers was invited to speak to teachers about education at a conference.
Ayers is an unconvicted murderer and terrorist bomber who for reasons obscure is still sucking free air.
The teachers ask a good question. Perhaps next year the speaker at the convention can be Ted Kaczynski (speaking on environmental awareness, of course) or perhaps Kim Jung Un, who can provide a sequel to Ayers keynote speech, describing in detail what actually happens when communists take over a nation. If that's too controversial, Un could discuss the socialist approach to the prevention of childhood obesity.
Or perhaps the conference organizers could ask Columbia/NYU professor Kathy Boudin (a convicted terrorist murderer) to talk about fundraising or something.