Yes, whities were slaves, but it's a long time ago.
This actually makes me curious, say, in the 1100s, by then I reckon we would be done enslaving the Irish, while at the same time, pillaging, slavery, rape and destruction would be relatively fresh in their memory. They would be able to name ancestors who were taken away. I'm sure a common-sensy Irish persion would be perfectly cordial with a common-sensy Norwegian, but how volatile would a situation be if an authoritative Norwegian then raped or enslaved an Irish person? Would it flare up similarily to the guilt-business in America?
I say probably.
Not that I condone or applaud it - but I suspect it would be very sensitive.