As a Catholic, I'm very much in favor of ecumenism, including greater cooperation and improved uderstanding between Christians, Jews, and Muslims. However, when it comes Bishops opening their churches to illegal immigrants in order to pressure the Belgian authorities to allow the immigrants to stay in the country, altering the inside of a Catholic church, and especially moving the altar and covering the statue of Our Lady to hide her from the eyes of the Muslim believers, we have left the realm of Christian charity and reached into the bottomless and dangerous well of voluntary dhimmitude.
While Western Europe is turning Muslim, its Christian Churches are committing suicide. A Muslim would never allow his mosque to be turned into a dormitory for non-believers. This, however, is exactly what the Belgian Catholic Church is doing. The Belgian Bishops have already opened up 20 churches and chapels to illegal immigrants - so-called "sans-papiers" or "people without papers [=staying permits]" - who by Belgian law have to be expelled.