I knew Irish Protestants who became dedicated donors to the crowd who was shipping guns to Northern Ireland when they got roused up, but more often than not, Christians start to try become more charitable and better people when they start trying to live their Faith.
In the case of Mooze Lames, when they start to try and live their Faith they're easily led to killing infidels.
I'd say the "real question" is who in the area around Boston is preaching jihad at Friday prayers.
The Irish conflict is an ethnic one, which has been portrayed as religious by the media. The battle is between the native Irish, and the Scots-Irish who the Brits imported from Scotland.