My history is a little rough, but I am aware that Ireland's past, particularly that of North Ireland, is wrought with conflict. I know there are multiple causes, but that -- whether as cause or excuse -- the fact that the English and Scottish colonists were Protestant while the rest of the island was predominantly Catholic. Through generations of conflict many atrocities were committed by both sides.
I was recently listening to some Irish folk songs, one of which is a lament of the blind nature of this rift and the lives lost in revenge killings in both directions. At the end there is an unidentified reference to "Roses", as if that symbolized something in the conflict between religious traditions. In fact the name of the song is "There Were Roses" (youtube), but it is entirely about Catholic vs. Protestant relations.
Did the rose symbolize something religious during the North Ireland conflicts or would this be a reference back to the War of the Roses (which was more a struggle for power between two related houses not an extension of Catholic/Protestant aggression).