These arguments can be used to turn away black people, or chinese, or many people of different ethnic backgrounds. Do you think that is right?
Harekin is wrong. Say you own a shop. You can't say "get out of my shop, you're chinese!!". If you drive a bus, you can't refuse people that want to get on the bus because they're black. If you do that, you will get complaints. And justly and rightfully so, the law will come down on you for discrimination.
The problem with religion is that is sometimes used to justify things that normally aren't justifiable, like discrimination. Don't you see something wrong with "it's ok for them to discriminate, because their discrimination is faith-based".