Oh go ahead, so long as you don't mind my posting all the laws that the southern states had to make sure that free blacks didn't settle there, or to make sure that such a thing as a free black didn't occure in the first place.
...your ancestors' imperialist, bigoted, racist motives.
There's a case of the pot calling the kettle black. IMHO, of course.
As soon as you can defend your side let me know and we'll have a go at it.