ICP definitely know what's going on. Love or hate the music, they got out of the mainstream because of the evil going on. Check out the lyrics to the track Hawking:

It always feels like

Ravens and crows are watching me

I think in real life

This shit ain't always what it seems

Our society? Fucking high to me

Be one of them? Fuck that. I don’t try to me

Crows, ravens, and hawks – they've been peeping

Watch. Their behavin's off

Listen, here’s Squawks. Clear communication

With who, though? A lunar substation?

Enemy nation? I feel the air stick radiation

The terror I'm facin'? Uncomprehendable

Poisons in every edible

Harmful chemical is spraying the vegetables

Connoisseurs, tell me what they did to the meat

Answer: Fucked it! Injected it with shit and skeet

They scan us all, even kids in the potty

Plot to stop it, they'll ruin that party

Toxins, cancerous to the body

Exactly as planned by the god damn Illuminati!

Right! We're programmed, so each other we fight

Eazy and Pac saw this and was about to shed light

But they snuffed ‘em, and now we're blamin' Suge Knight

Just they figured we would. They were right!

They travel tunnels underneath where we're standin’

They’re down there making plans of commandin'

Of upperhandin’, of reprimandin'

Fuck! Way above our understandin'

Did you know they control the music our kids hear?

Trying to program the population and steer

Them into private prisons, ‘cause the more inmates

Means the more intake the fuckin' bitch makes

Human life is their last concern

We’re just passengers on the world them bastards turn

Nine eleven was a government plot, we've learned

[Together] Hell's Pit is where lovin' each other burns

What's killin' half a million when you've got no feelings?

They'll bust nuts healing kids die, squealing

If their own son's windpipe's in the way of a profit

There's no end in sight to the ways they'd chop it

These days, they could kill any sickness

But they'll pay keepin' them at bay; it's the business

Hawking. Just know they're watching your face from space

Peepin' (Just in case)

Prince knew about the third eye (Uh)

We've been told an untruth – an absurd lie

That's why the man died in a fashion, bashin' his credibility

They humiliated him for his ability to see

Even Einstein suffered from manic depression

Because he understood… Oppression!

Stay in the dark. Don't watch or diminish

It hurts. It's [?]

Now they splittin' atoms; it's how they make hurricanes

Tsunamis, typhoons, the murder rains

They can make you do anything, any season

Only question: Why the… For what reason?

Zoning, when they need to give the mass bone

It's tragic, and they only clone to own

Look at Kim Jong, evil and all wrong

‘Cause he's a puppet; the original is long gone

Signs, logos, barcodes that speak evil

Behind closed doors, rituals of eating people

Creepy man snakes, secret handshakes

They need and plan lakes to contaminate

Secret societies, cliques of pedophiles

Billionaire boy's clubs with satanic styles

Never enough, lips muffled and stuffed with dick

Sick shit, sold as a snuff flick