I don't think these people are fearing meth.

Nah, they're fine with meth. Math scares them because they can't twist it to fit their bigoted beliefs, they've tried their little hearts out tho.

Later in the story they talk about the supposed MAP (or "minor-attracted persons") agenda -- maybe "the Math Agenda" was a misspeak referring to that?

But on the other hand, these people are also lunatics so 🤷

Save the children from meth! Save it all for the kill-billies who organized this protest!