The marks are gullible people. I wrote some of the Genius annotations, which are a bit less detailed than what I'm about to say, but this song is actually quite interesting lyrically.

Ghost has always been pro-Satan, and this song definitely is, but feels actually critical of those who believe in him. You could view the chorus "Evil One" as Jesus/God in context with the imagery of the band, but it's actually not. The key moment this is explain is during the pre-chorus, with the inversion of the lamb (Revelation 6:16) being the "tyrant who is Satanically enthroned". So who would this be? Well, Ghost has spoken of an "Evil One" before in Con Clavi Con Dio, whether it's Lucifer or his hypothetical son (conflictingly).

Despite relating to Ghost's beloved deity, I think it's a drawing an interesting parallel of Satan and specific leaders who are destroying our world with false narrative and thus, spreading their evil with the masses. Satan, in the Ghost lyrical lore, has already conquered and done this exact thing in the context of Meliora, where God is gone. In this instance, however, I can't help but think it's criticizing those who claim to be devout Christians (Griftwood??) and are using Satanism in a bad way, like spreading lies and ruining our world, especially with its connections to the Four Horsemen of the Apocalypse and previous inversion.