Vulgar Display of Power

¿Sabía ud. de dónde viene la frase "vulgar display of power" que titula uno de los mejores discos de la historia?

Pantera -- A Vulgar Display Of Power

I came across this clip while watching The Exorcist recently. I bought AVDOP in 1992 and not until today did I know where they got the title. Interesting.

YOUTUBE.COM