Which wouldn't have done anything at all had the North not been a nightmare of oppression. The civil rights movement had infinitely more to do with housing and jobs than with "roots".

Read about Bernadette Devlin and Burntollet, which was where the Northern Irish state (different from the British occupation, left mostly to go their own way) showed that it wasn't going to allow American civil rights nonsense to spoil their little local hegemony.