I think you finally may be getting it somewhat. The US is a very conservative country, especially on economics, there is effectively no history of left wing politics here. If you don’t think however that the Democratic party is moving to the left then I think you need to reevaluate your sources. Democratic Socialists like Ocasio-Cortez are getting a lot of airtime on MSNBC and CNN. This is an expressly anti-capitalist party. I’m not saying their voices should not be heard, but a party who’s intent is to destroy capitalism is hardly simply liberal.