Bernie is not a typical career politician. He at least believes in communism. He preaches what he actually believes. Therein lies the problem. In California, 1,548,025 people voted for Bernie compared to 1,237,944 who voted for Joe Biden. Bernie’s followers are as passionate as him and there are already rumblings that the primary has been rigged again to make sure Bernie will lose the nomination.
This is the root of the problem. The Democrats are deeply divided and there is a lot of hatred among them. When Elizabeth Warren ended her bid to become the first female US president, she refused to endorse Bernie in his battle against Joe Biden.