If something you knew to be true was labeled "hateful" by all of the "tolerant" and "broad-minded" folk around you, would you disbelive your eyes?
Don't make your fantasy my reality.
Of course not. And this is the point you are missing: not all the truth must be said.
YOu actually follow this rule every day: your teenage son or daughter is about to make what you think is a (Small) mistake but, trying to give some room, you don't say anything, letting the child see the consequences on his own. HEy, even simpler: you see a peace of lettuce stuck in your guest's teeth, and you do not say anything.
If I said that only Jews are human, you would go through the roof: " How dare you exclude me," you would say. But you yourself so easily state, "THis is a Christian nation."
No, it's not about what you see. It's about mere tack and politeness. It's surprising that not only you do not exhibit the latter -- you even cannot tell these two notions apart.