"the Irish were Catholic and Catholics were suspected of infiltrating the government, being loyal to a foreign leader and wanting to impose creeping Catholicism unto unsuspecting Canadians."

Ask Quebecers about their experience of Catholicism and the quiet Revolution. Once they were Catholic and Anglo-Protestants were considered bigots if they criticized them as "church ridden", etc., but today they would be the first to tell you about how proud they are of having overturned the dominance of the Church and become a secular society.

The best thing that happened to lay to rest those fears in Canada was the general secularisation of society after WWII which put religion in the background. Religious affiliation stopped being a major aspect of social and personal identification, and so religious conflicts largely disappeared.

The return of religion as a major factor of social and personal identification is not good news.