This is a perversion of things Christian which is on the rise in certain sub-cultures, especially criminal.
There is an article at the site of the FBI “Santa Muerte: Inspired and Ritualistic Killings (Part 1 of 3)
By Robert J. Bunker, Ph.D.”
If you look at this material, keep in mind that much of it is quite dark. There is great evil here and the influence of the demonic.
One of the things I learned during the exorcism conference I attended is that incidents of demonic oppression and possession have been on the rise over the last few years.
Let us keep our eyes open. Let us tune up our antennas and radar and be on the alert.
We have to learn to engage with our Holy Angel Guardians more, I think. Ask them for help with all manner of things in our lives.
Use sacramentals and GO TO CONFESSION.
A great spiritual war is rising.