No, that's not what I mean. Never said anything about a complete stranger, that was something you added.
Let's suppose that you know of a person who you are convinced is in danger and who you are convinced is going to be a law abiding citizen. For argument's sake we'll say that this is a person who was on a work visa, and while working in your country, there was a civil war in theirs, and currently a group they belong do (religion ethnicity w/e) is subject to harsh discrimination and possibly could be killed. You have known them over the course of their visa, and believe them to be a decent law abiding and honest person. They will not be able to follow the process needed to extend their visa or legally immigrate in time, and they do not have any legal recourse.
In this circumstance would you support their efforts to stay in the country illegally?
I'd argue that the majority of illegal immigration is not like that, but yeah, in those circumstances I'd support them.