If I actually felt like engaging, I'd probably just buy the original donator a gift subscription to The Nation or something like that. I regard the actual organization as being much like Glen Beck - either a completely cynical huckster who doesn't actually believe any of the crap he spews, or someone so dissociated from reality that discussions are pointless. Either way, I'm not going to convince them of anything, and after an initial unsubscribe I just mark anything further as spam and be done with it.