Sorry reverse racism doesn't exist esp in the context of US race relations like it was said pretty adequately by Stokely Carmichael years ago when he made the argument "If a white man wants to lynch me, that's his problem. If he got the power to lynch me, that's my problem. Racism is not a question of attitude, it's a question of power".
There's a lot more potential with the Corbyn project then Sanders on the basis that Corbyn unlike Sanders has very principled anti-imperialist positions there's also the fact that Corbyn is much closer to gaining power than Sanders (and honestly I think that chance is pretty much a dead-end at this point).Imo Corbyn and Sanders are Very good to their respective parties and i think we should support them, but idk If they will leave the reformism camp, i Hope so, but only time will tell. I think what hat is talking its that the big part of the left today is reformist or even a less brutal version of a neo liberalist. Like Tony Blair and i think thats the labour party he was talking about.