The literal english translation from Warszawianka is pretty cool:

Hurra! Let's tear down the crown of the tzars,

While peoples are wearing the one of thorns.

Let's drown the rotten thrones in blood,

Thrones already stained purple with the people's blood!

Ha! Frightful vengeance to today's tormentors,

That suck the life out of millions of people.

Ha! Vengeance to the tzars and plutocrats,

And we'll harvest the crops of the future!

The modernized english version goes like this:

Off with the crown of the tyrants of evil!

Down in the dust with the prince and the peer!

Strike off your chains, sons and daughters of labor!

Wake all humanity, for victory is near.

For something a bit more recent I always liked Chairman Mao by Bambu:

I study Mao Tse-tung's tongue, the young gun

Lock, load, and bust one

Champion with it like brraammp pomp pomp pomp

Lebanon guerrillas that'll egg 'em from ten yards

With little pebbles, I call it strength in arms

When it's broadcast on broadband, they savages like Tarzan

They never get the background story they'd rather jam

Your frequency with trickery and headline news

It's nothing new

And if it's only half the truth it ain't true

Living proof that guerrillas in the Philippine jungle

Won't stop, won't quit till the babies don't struggle

I rumble with colonization's effects on my people, homes

The buck stops here with a buck to your ear

The current affairs that wear my fellow organizers out

Same machine that be wiping my fellow activists out

From the comfort of a couch we make critiques of the world

While little girls in the mountains let the slug shots hurl