If you're not embarrassed with Bernie, you're missing the whole point about politics. Marxism, and communism, and progressivism are all fake ideas with no useful reality except to those who can take advantage of ignorant or credulous people and get power with those pretensions. In power, totalitarians or whatever honchos you have, will always feather their own nests, and make you pay for it. Some are just crazier about it than others.
People who actually believe in the reality of these fake political philosophies don't understand human nature, and how people use power when they get it. It's really very simple. It doesn't matter what lie you sell, when you're in power you will use it personally and profitably.
The American political design, under the Constitution, was an effort to keep cliques and dictators from easily getting enough power to be really harmful. A vain and foolish dream, perhaps, but it is our only real hope for human rights, equal protection under the law, equal justice under the law, and the ability to do well for ourselves financially.
Bernie is just an old Red. He has used politics to provide his meals every day of his adult life, with neat little advertising monopolies he coerced political candidates to buy from his wife, at a nice price. Nobody should think he's nice, or has a good personality either. A goofy smile and vacuous platitudes is not "personality".
And, oh, what "Congress" won't allow "socialism"? Pelosi's house and Schumer's Senate??? AOC's rising YoungTurk/Soros star????
We had a communist President for eight years, and you didn't even know it. Yah, he didn't have Congress all his way, but he had a pen. And he had cronies in every closet in Congress and in the DC agencies. Hillary is a communist ideological believer. When you hear politicians talking about "Open Borders", they are reading a line from the Communist Manifesto.
Capitalism is simply the freedom to do your own business your own way. There is no Utopia that can be realistically imagined that can exist with human freedom, so when you see political honchos with plans to tell you what to do and how to do it, the dream is dead. I call all political ideologies a lie, because they are. And very bad lies.