There is controversy about Melinda Gates wearing an upside down cross, which the paranoids, like yours truly, take as a Satanic symbol. Of course, the mainstream hoses this down, with Snopes.com, not to be confused with the ever-lovable Snoopy of Charlie Brown fame, saying it is is false news, because, well, the upside-down cross was used by Saint Peter, which is true. Further, the upside-down cross is not accepted as the official symbol of the church of Satan, stand back, evil. The Sigil of Baphomet, a goat’s head inside an inverted pentagram, is the official insignia. God protect us. So, does that end it? Well, Google a bit, and one will find many Satanists using this symbol anyway, it is popular, it is an inversion for whatever reason. So, Snopes does not consider that this could be an unofficial symbol, like many hand signs used by neo-Nazis and other fringe groups. Why would such a figure use a symbol that is of contested meaning at best, when she could have not worn anything at all? By that I mean, not going naked, a truly terrifying thought, but not wearing any jewellery? Or, maybe a gold syringe, perhaps?
https://www.ibtimes.sg/melinda-gates-upside-down-cross-necklace-creates-controversy-netizens-call-her-satanist-45259
https://www.snopes.com/fact-check/melinda-gates-upside-down-cross/
https://www.urbandictionary.com/define.php?term=Inverted%20Cross
https://en.wikipedia.org/wiki/Cross_of_Saint_Peter