Ahead of the mass the pope insisted to an audience of around 400 at Rabat's cathedral that trying to convert people to one's own belief "always leads to an impasse". "Please, no proselytism!" he said.
Christians are a tiny minority in Morocco where 99 percent of the population is Muslim, with sub-Saharan Africans making up a large part of the country's 30,000-strong Catholic community.
Islam is the state religion and authorities are keen to stress the country's "religious tolerance" which allows Christians and Jews to worship freely.
But Moroccans are automatically considered Muslim if they are not born into the Jewish community, apostasy is socially frowned upon, and proselytising is criminalised.GO READ THE WHOLE THING.