This is a video of Phil Daro and Uri Treisman of the Dana Center, during a visit to Bellevue, WA. They are instructing teachers on how to deal with parents opposed to reform math. In a nutshell: "Lie".
The synchronization between sound and image is off, so lip movement will not match the words. Doesn't matter; even if it did, the effect would still be nauseating.
Phil Daro does this kind of thing routinely, and he is part of a group called the MARS team. MARS stands for Mathematics Assessment Resource Service, which operates in part from a grant from NSF. ( Grant No ESI0137861). The MARS team has a website, and it contains all kinds of useful information including "tools". One such tool is setting up a "peace treaty". According to the web site, the peace treaty
"...is a disarmament tool – a brief statement of common beliefs that the non-specialist public can understand. It is not a compromise, but a response to the legitimate concerns of the public, especially parents. It can be adopted as a policy of the district, circulated to the press, or by any other means of getting it to the public as a representation of what the district math leadership believes about the issues spelled out in the Treaty. To build such a consensus, it is important also to bring in mathematicians from the local academic community who are interested in mathematics education in schools but have not adopted extreme positions. The letter and meeting agenda are designed for this purpose, complementing the text of the Peace Treaty."
Note that the key qualifications for mathematicians from the local academic community are that they not adopt "extreme positions"; loosely translated this means they should not be against fuzzy math.
The peace treaty is "to help change agents, if and when the 'Math Wars' impact their system, to take the heat out of the exchanges by seeking common ground and civilized discussion of areas of disagreement."
I think that's what Daro is doing here in this video, though he is talking only to teachers, and he seems to definitely be quite defensive against those pesky parents.
The last blurb on the web-page on the "peace treaty" provides the following advice:
"Do not worry about getting people to sign the treaty. You sign it and make it public. Then challenge anyone who attacks you on the grounds they are attacking what you stand for in the treaty. Dare critics to sign on or publicly expose their disagreement with it. Do not add divisive language, even if it warms your heart. Do not use this tool as a public education tool. It is a public engagement tool. It is already understood by the public. They want to know if YOU understand it. This is not an expression of your philosophy. It is a direct response to issues framed by the public. Don’t change the subject."