Why Pope St. Leo IV Built the Vatican’s Walls

To repel invading Arab Muslims, who had already sacked the little city in 846, and looted and burned Old St. Peter’s, St. Paul’s-Outside-the-Walls, and much else.

I guess the saint was not only against open borders, he was a racist, a xenophobe, an Islamophobe, a discriminator, and an opponent of diversity. Instead of building the wall, he should have simply said, “Who am I to judge?”