"Used to wear iron shoes with ease"

Watching Aljazeera a couple of days ago, I saw a trailer for a coming programme on the experiences of a Liberian immigrant to the USA. What struck me about this is that the state of Liberia was founded as a refuge in their ancestral continent for freed slaves from the harsh treatment and oppression they faced in America. As a keen student of the ironies of history, I find it an interesting comment on changed racial attitudes in the USA that the flow of people is now in the other direction.