That’s nice. But the reality is the “Week of Prayer for Christian Unity” means nothing for Catholics in North America. I ministered in three dioceses as a lay Catholic: Ogdensburg, Los Angeles, Galveston-Houston. In none of them was the Week of Prayer for Christian Unity a significant observance. In none of the churches for which I worked, or which I attended while working for the archdiocese, was there ever an observance.
Part of the problem is that churches and dioceses put more emphasis on MLK and anti-abortion observances in the same time period.
But Catholics really aren’t into ecumenism. Theologically, ecumenism can only mean for Catholics a return of Protestants to the Catholic Church. In the meantime, there may be some cooperation with Protestant social organizations, and a rare joint prayer service, but that’s all.