The Pope was wearing the Algiz form meaning DEATH
https://en.wikipedia.org/wiki/Algiz
The Yr rune came to be seen as the "life rune" inverted and interpreted as "death rune" (Todesrune) During the World War II era, these two runes (ᛉ for "born", ᛦ for "died") came to be used in obituaries and on tomb stones as marking birth and death dates, replacing asterisk and cross symbols (* for "born", ✝ for "died") conventionally used in this context in Germany.