Is it possible that scientific facts are the anti-vaxxers "kryptonite"? If so, would it be

[Atticus]

cruel to swear a tee shirt with the periodic table on it?

How about one with an illustration of the Pythagorean Theorem?

[Moostache]

1. You cannot reason with irrational people.

Facts and science did not put them in their current mental prison and giving them facts to dissuade their idiotic conspiracies won't register.

Now, if you dress up like Jesus and tell them to stand down, they just might grab you and re-enact the crucifixion but they would not believe you.