Yes, civil manner. That is the point. This is a civil website with civil people. These miscreant immigrant bashers need to remember that. We are a nation of immigrants and we need to treat all immigrants and discussions in a civil manner.
With respect to #2164, only if they are legal, not criminal.
To be perfectly honest, I've witnessed just as many-if not more-FReepers who are opposed to reasonable immigration restrictions behave in that manner.