1) It seems to me that the group of people who are defending the
elimination of "evolution" from curricula are using some of the canons
that part of the scientific community has constructed for itself. In
this sense, they are using against the scientific establishment a
reference to the same "mechanism, theory, or practice" which the
scientific community has been using to establish part its identity and
maintain itself for quite a long time. I'm referring to the idea that
scientific practices can be independent of cultural and historical
factors.
2) Latour illustrates how science is messy as any other human affair,
and how the independence of "facts" or "technology" has been used as a
justification for a de-emphasys on its social and political
consequences. (I'm thinking about "Science in action" and "We have
never been modern")
In this sense, what "creationists" are using as an argument against
a particular topic (for their own cause), is the constructed dynamics
that the latter is studying.
My 2 cents,
luiz