Secularism: (comes up for Secular and secularist)
secular spirit or tendency, especially a system of political or social philosophy that rejects all forms of religious faith and worship.
imbued with or exhibiting religion; pious; devout; godly:
a religious man.
I use religious as a juxtaposition to secularist. We can equally use secularist and anti-secularist. Secularists, I would guess, commit 99% of the violent crime in America as opposed to the anti secularists like the ones the author is concerned about.