The Northern Irish conflict commonly called "The Troubles" has been characterized as a sectarian in nature; Protestant vs Catholic. How or what influence did the church hierarchy have on the conflict?

Either in ending it or promoting it.

I can see how the individual religions could derive benefit from the continued struggle both in keeping congregants and in winning new converts during an era of reduced church influence in society. Demonizing members of the opposing church would fan the flames and inspire members to action.

But this would seem to go against the beliefs of both religions.