The upside down cross is in NO way demonic or satanic. It is a symbol of man’s humility and unworthiness of Christ. When Saint Peter was crucified he refused to do so the same way Jesus did, so he was crucified upside down. It then became a Catholic/Christian symbol.
If you’re going to plaster religious symbolism all over your body and your social media accounts at least know what the hell you’re representing. All these HotTopic “satanists” acting like they’re hard when in fact, you’ve no idea what you’re even following.
I’m all about believing whatever you chose to believe, but please, actually KNOW what you believe.