We have no need to look at China, no need to look at jews, no need even to look at slaves. We can look in our own mirror of history. No human beings were treated worse than the Northern English factory workers of the nineteenth century. No immigrants, forced or volunteer, were treated worse than the poor Irish of the same and later times. In fact the fight, if fight there be, should be between the classes not between the races.
I know the slaves worked on plantations, were beaten and abused and had a much reduced life span.
Workers in the Lancashire mills lived in hovels, sometimes four families to a single basement room, entire families at work in the factories and few living beyond their mid thirties. A good looking girl would be used for the pleasure of the mill owner and her siblings as young as six and seven would work the whole day in the mill.
The African slaves would have been African slaves whatever their colour. They would have been shackled, starved and raped whether they were white black or any other colour. They, like the cotton workers of Northern England, like the poor starving Irish were the sacrifices that were slaughtered for the good fortune of the rich.
The 'n' word was an easy and dehumanising identifier. The English mill workers, because of their colour, were eventually able to shame their owners, but even today the divide exists.
In my travels I found more in common with the Chinese peasant, the African labourer, the Thai servant than with the new aristocracies of Europe and America.
There are two kinds of people. The exploited and the exploiter. Most of the former are too stupid to hold a mirror to their plight.