Same thing happened in the 80's with metal and rock. Head the balls playing records backwards and then killing themselves or others. A character from the show preacher nicknamed Arseface by the irish vampire cassidy(he fought in the civil war) is based on one such person. A chap by the name of James Vance. His family took Judas Priest to court over it.
https://www.rollingstone.com/music/m...ks-back-57552/