Nah
But there are some pretty fucked up people out there that write fucked up lyrics with messages I would categorize as evil. But that's not the mainstream. There is such a thing as "neo-NAZI bands" for instance, the message doesn't really become any better if you bring it with a drum and put a guitar riff behind it. But by itself, heavy metal bands aren't evil.
Believe in me, send no money
I died on the cross and that ain't funny
But my so called friends they're making me a joke
They missed out what I said like I never spoke
They choose what they want to hear, they don't tell a lie
They just leave out the truth as they're watching you die
They're saving your souls by taking your money
Flies around shit, bees around honey
Holy smoke holy smoke, plenty bad preachers for the devil to stoke
Feed 'em in feet first, this is no joke
This is thirsty work, making holy smoke, yeah
Making holy smoke
- Iron Maiden, Holy Smoke