We keep saying that other cultures doesn't work.

I have no idea what a culture is these days? I have no idea who sets what my cultual identity is suppose to be?

If we are going to say that mixing cultures don't work.

Ok.

Then we need tp convert the concept of a culture into a list of tangible items that we can compare and contrast.

What I see from most people.

It's all about CRIME and that's it.

We cannot live next to XYZ because we are good and they are criminals.

That's the argument I see.