The protestants want it both ways. Aggressors and victims. If they fled violence it was violence perpetrated by their own people.
The Catholics in the Republic have never treated the protestants with the same kind of brutality that the Brits/protestants in the north treated Catholics.
The Catholics in the Republic may never have treated the protestants with brutality, but then they don't need to do they? Protestants are such a small minority there, and anyway, the nationalists won.
I deny the implication that its the Brits/protestants who commit all the brutality. I know a lot of people from Northern Ireland and a lot of people who have been there. I can state quite categorically that the two sides are as bad as each other. I also know a lot of British soldiers who served there during "the troubles", as it was known, and I can assure you they were completely unbiased - catholic/nationalist or protestant/unionist, the British army hated the lot of them!