Once upon a time the rallying cry was "onward Christian soldiers", now the preachers welcome unlimited numbers of invaders with open arms, and tell their followers that they must not think bad things about the invaders or else they are committing the sin of "racism", which of course is the worst sin of all according to the modern "state approved" litany.
As long as the biggest virtues being preached by the Christian churches is "tolerance" and "diversity", the people will continue to turn away from Christianity and towards something, anything else that will preserve their culture and their nation. A task that Christianity has failed at.