Not only is this claim blatantly false, but even users in the original Reddit thread where this was shared point out it's misinformation. The inverted cross isn’t inherently satanic — while some satanic or anti-religious groups have co-opted it, its origins are deeply Christian. It's called the Petrine Cross, a reference to Saint Peter, who, according to tradition, was crucified upside down out of humility, believing he wasn’t worthy to die in the same manner as Jesus.
The reason this symbol appeared near Pope Francis’ casket (not coffin — coffins have six sides, caskets have four) is because the Catholic Church views St. Peter as the first pope. So displaying his symbol inside St. Peter’s Basilica — named after him — is not only appropriate but expected. It’s a traditional part of Catholic iconography, not a satanic symbol.
Citing sources like Truth Social or Newsmax without verifying through established outlets is part of how these conspiracies spread. For actual context, I recommend:
Reuters Fact Check
Catholic Answers on St. Peter
Rev. Shirley Murphy’s blog on St. Peter’s Cross
This symbol isn’t satanic — it’s a reminder of humility and sacrifice in Catholic tradition.