The problem is, there are a lot of procedures for selecting electorates, and sometimes these are completely inadequate antiquated shitshows, but that's what the rules are, and they are yet another layer of aggregation and transformation that filters and distorts the "will of the people". And a lot of folks think that it's a conspiracy [that Bernie lost]. Well, no, it's a fucked up (broken?) system.
And of course this does not mean that there was no collusion between DNC and the Hillary campaign, and so on.