That's true, although sometimes there's prejudice towards people just because they are religious.
I've been thinking a lot about religious prejudice and what a serious problem it is.
I think often prejudice is overblown or exaggerated by the 'victims'. If a group isn't following the laws of a country, they play the victim card incessantly. I remember some former staff members playing the gender card for why they didn't get promoted. It wasn't their gender, it was their personality.
I do believe there is actual religious prejudice, though, but we shouldn't jump to conclusions. It can be other factors, like ethnicity, the aforementioned personality, race, etc.
Favoritism is also at play. Once at a tire shop (guy had Christian Businessmen Association posted all over) I got bumped out of line by the owner's church associate. I complained to the BBB on him. They weren't too happy with me.