Selfa begins the journey by looking back to how Roman's perception of slavery was not cut along racial lines. In fact, up through the end of the 17th century, even in North American colonies, much of the slave labor that existed followed suit. It wasn't until the price of an African slave became cheaper than a white indentured servant that slavery took on its now-inextricable association with race. With the "first bourgeois revolution," the American Revolution, an ideology of white supremacy came into being, as the leading thinkers of the time had to delineate who they meant by "all men" when creating equalities.
From there, slavery became a boon to 18th century European economies and launched the Industrial Revolution:
Further on, Selfa talks about how present-day anti-immigration attitudes are spun from the same cloth:
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