Skulls and crossbones have been used for centuries as a symbol for cemetery entrances going back to 1700s. Historical research also talks of piracy and a trail going back as far as Knights Templar. In our century we began to use them for warning of poisonous substances. Other cultures use the skull or skeletons for such varied expressions it’s too much to share in depth.
Recently, use of this symbolism in our culture tends to be vague for understanding what people are trying to convey. Are they trying to be cool? How so? Are they scary? If so, again I ask why?
I am only reminded of how we can be dead and yet come back to life from dry bones!
Eze 37:4-5 Then he said to me, “Prophesy to these bones and say to them, ‘Dry bones, hear the word of the LORD! This is what the Sovereign LORD says to these bones: I will make breath enter you, and you will come to life.