The Irish and Black people have a lot in common.They were both put through hell to facilitate British economic development.
In the 50's in London, there were signs outside hostels saying NO BLACKS, NO DOGS & NO IRISH or NO IRISH OR BLACKS NEED APPLY. etc...
And (arguably) - (he he) if you've ever compared a jamaican accent and a Cork accent ...........
I think I'd better stop there!
lox