to be clear: the intent behind this kind of an attack would not be to try and convince people that warren is a racist, although that would be a bonus. rather, the intent would be to force her to adjust. and, then, once you get lots of media images of warren shaking hands with black and brown people with weird clothes and stuff - and the sanders campaign may have to help disseminate those - you can snap this white voting bloc out of the haze it's in.

so, if you can convince black voters that warren is a racist, that's a bonus.

but, what bernie's campaign really needs to do is convince white voters that she's not a racist.

then, they can get back to looking at policy - and she'll lose when you put the issues on the table, straight up.