Two of the names carved into the Great Wall, in this case near Badaling, China. Authorities hope to cut down on graffiti by giving tourists a designated spot to leave their marks. David Guttenfelder /AP hide caption

itoggle caption David Guttenfelder /AP

Graffiti artist Mauro Palotta says Pope Francis is the only world leader who stands on the side of the people. Sylvia Poggoli/NPR hide caption

itoggle caption Sylvia Poggoli/NPR