sanders' purpose in the primary was to swing clinton to the left, which is why he picked up so much support.
for clinton to react by complaining - and she really is a whiner, isn't she? - that he was trying to pull her to the left is to state an obvious purposeful truth, and then bray at the moon.
yes, hillary: bernie's entire purpose was to try and shift you to the left. and, had you relented, you might have won.
http://www.cnn.com/2017/09/05/politics/cilizza-krieg-convo/?iid=ob_article_footer_expansion