I'm not sure that I can either - lots of mainstream multi-culturalism seems like wish-casting / motivated cognition to me. :)

That said, ChristianKI is right that any advice from us would be more helpful if you tried to outline what you think the mainstream is. For example, I can point you to court cases that explain why the law is what it is. But which cases I would highlight would depend on what legal obligations you think are least defensible.