Just as well that Sinn Fein didn't have to welcome the Germans as "Friends and Liberators" if their treatment of the Ukrainians who welcomed them on a similar basis is anything to go by.
I also suspect that the Waffen SS methods of putting down any attempts at self determination may have been a little more harsh than the British ones. At least the executions after the Easter uprising were not done summarily by hanging hundreds from lamp posts in the street.