Do you really think everyday "good samaritan" citizens somehow banded together adhoc and took on the life threateningly dangerous task of smuggling 'stolen slaves' from the south, risking their lives on working with some other adhoc unknown people they were taking from and forwarding to? All so that they could get third world population up to a place that was almost certainly entirely white at the time? Sound familiar to getting third world 'migrants' up to the US now? What if they rebrand what is happening now 100 or 200 years later?