If you want to get into specific policies, it kind of gets into experts and the end justifies the means. But the Democrats won't argue their policies, because they know they are unpopular.
They think America is evil and its unfair that we are wealthy. They want to spread that wealth around to the rest of the world. They think nationalism is bad.
They don't understand climate change (which is obvious from things like them all living on the coast), but they think they do. And that means deliberately driving up energy prices to encourage conservation. Driving up car prices so people can't afford cars. Shrinking the American manufacturing economy since we tend to use more energy per capita than most of the world.
They think expert judges should ignore the law and rule based on what ends they think are best and that judges should ignore legislatures and the people's will.
They think government should decide winners and losers in the economy based on what experts think is best, not on the free market. This is really just a different version of Stalin's and Mao's 5 year plans that starved tens of millions.
Oddly enough, they trust authority much more than conservatives do. You would think it would be the opposite.

Many have been indoctrinated into this in schools that are dominated by liberals. Some just come by it naturally.