[Starwolf]

I don't recall the UVF or Orange Order ever conducting a bombing campaign in Ireland or attempting to kill Irish politicians

I do recall the IRA and Sinn Fein's abject refusal to consider a plebiscite in the 6 counties.

While the English are far from saints, and the Orangemen have a fair amount of blood on their hands, both are considerably cleaner than the terrorists of the IRA.

[Killing Time]

I don't recall the UVF or Orange Order ever conducting a bombing campaign in Ireland

Well, so long as you disregard the single largest atrocity of the troubles:

http://en.wikipedia.org/wiki/Dublin_and_Monaghan_Bombings

Although you are right about who was responsible for the most deaths:

"The bare facts are that of the 3, 285 deaths in the conflict from July 1969 to December 1993, Republicans have killed 1,928, Loyalists 911, British forces 357, Irish Republic forces have killed 3 and "others" [deaths impossible to link to a military group] 86. Of these, 3,059 occurred in N. Ireland, 91 in the South, 118 in Britain and 17 in continental Europe."

From http://www.inac.org/irishhistory/deaths