Pretty sure this is in the wrong place.
But yeah, Rise Against are "Mainstream" and in my opinion punk posers.
If you want real punk listen to Rancid or NOFX.
i wouldnt consider them mainstream in the UK. besides, they don't declare themselves as playing punk music, they just make whatever they want and enjoy doing it.
i went to see rise live at the manchester apollo in november, best night ever. favourite songs? disparity by design, drones, this is letting go, though i like pretty much all of them.
why does it matter if a band is mainstream?
If you like them, listen to them.
Rise Against happens to be my favorite band, and at what Reg said, I've heard of NOFX and Rancid and I don't like them one bit. It's not a matter of mainstream/underground, but what you like.