PizzaMan

Lots of stuff with Maynard James Keenan. Though for political message, his singing in A Perfect Circle probably fits better than that of Tool. APC has one CD that just does covers that work out well, What's Going On, Peace, Love, and Understanding, etc. Though my favorite for political message of theirs is Pet (It's the best anti-Big Government song that I know of.):

Don't fret precious I'm here, step away from the window
Go back to sleep

Lay your head down child
I won't let the boogeyman come

Counting bodies like sheep
To the rhythm of the war drums

Pay no mind to the rabble
Pay no mind to the rabble

Head down, go to sleep
To the rhythm of the war drums

Pay no mind what other voices say
They don't care about you, like I do, like I do
Safe from pain and truth and choice and other poison devils,
See, they don't give a **** about you, like I do.

Just stay with me, safe and ignorant,
Go back to sleep
Go back to sleep

Lay your head down child
I won't let the boogeyman come
Count the bodies like sheep
To the rhythm of the war drums

Pay no mind to the rabble
Pay no mind to the rabble

Head down, go to sleep to the rhythm of the war drums

I'll be the one to protect you from
Your enemies and all your demons

I'll be the one to protect you from
A will to survive and a voice of reason

I'll be the one to protect you from
Your enemies and your choices son
They're one and the same
I must isolate you
Isolate and save you from yourself

Swayin' to the rhythm of the new world order and
Count the bodies like sheep to the rhythm of the war drums

The boogeymen are coming
The boogeymen are coming

Keep your head down, go to sleep, to the rhythm of the war drums

Stay with me
Safe and ignorant
Just stay with me
Hold you and protect you from the other ones
The evil ones
Don't love you son,
Go back to sleep