Proper political/revolutionary rap is rare on the ground compared to the days of glorious Old Skool. But Sun R.A. is one contemporary hip-hop artist following in the honorable tradition of rhythmic agitation. I think you'll like the lyrics LC:

Break the Chain

"(Chorus)
I reminisce on times, my rhymes never miss //
It's a bitch ain't it, the shit's tainted, operating //
In the interests of the rich, while we ain't got shit //
But the little bit of crumbs that gets thrown our way //
We on our way, to make a change //
And all I say is revolution break the chains"