Black people didn't vote for Bernie in 2016. I haven't seen any demonstration from Bernie that he's trying to build bridges with black Democratic Party leaders. It's not as if he's doing an end-around and directly appealing to the broad base either. There has been no demonstration from Bernie that he's reaching out to Democratic Party voters who are black, Hispanic or women to show leadership in their issues. Regarding your claim that Democracy is dead in this country, I'd like to remind you that Democracy is not all about catering to white men, maybe with a kennel in the back room. Bernie has to win black, Hispanic and women's votes to win the Democratic nomination. Failure to do so isn't a demonstration of the failure of democracy. Actually, Clinton's win demonstrates otherwise. She most clearly did win the votes of not only the majority of the party by a whopping large margin but also across a broad diverse base of the party.
Please don't embarass yourself by posting opinion polls. What effort is Bernie putting forth to show leadership in issues that affect women, black and Hispanic voters? I can point to times where he quite clearly demonstrated that he didn't get it. The best example was when he said that "people are tired of pc rhetoric" and went on to show he didn't even understand what pc rhetoric was. That was about two years ago and a month after the Presidential election was over. I find no examples of him walking this statement back. It wasn't that he misspoke, he truly meant it. It plays well with white men, which is his base and he's not going to do anything to affect that. His strength is his weakness.
skip to 0:43 to 1:15
He deflects to other issues quite quickly thereafter. His message is how money has screwed up the system. Quite clearly in this town hall he didn't want to dwell on issues that affect black, brown or women's issues.