“Little children, flee from idolatry.”
If you are a Christian you seek to see things the way Jesus sees them. You study the scriptures to see what Jesus would say on a subject. The scriptures say to concentrate your efforts on beautiful things and good works.
If Christians justify watching evil images they’ll have to account for that when they die before Jesus Christ.
In essense, your observation is consistent with the Bible, but not altogether unclouded by sectarian dogma:
"...Beelzebub is prince of phantasms, inhabitants of his dominion of air and darkness, the children of darkness, and these demons, phantasms, or spirits of illusion, signify allegorically the same thing. This considered, the kingdom of darkness, as it is set forth in these and other places of the Scripture, is nothing else but a confederacy of deceivers that, to obtain dominion over men in this present world, endeavour, by dark and erroneous doctrines, to extinguish in them the light, both of nature and of the gospel; and so to disprepare them for the kingdom of God to come."Leviathan, 1651.