Declare to the Dems “I’ll only vote you, if you stop genocide, internment camps and start taxing the rich properly.” Then follow through with it. Already saying you dont want to follow through with it is telling them, that they dont need to listen to you. This is the only language they understand. Ideally look into organizing for a third party, so the Dems can be overtaken by a better third party which can take their place in the political system. The DNC has proven time and time again that they will be authoritarian and undemocratic to ensure no actually progressive candidate to make it into their leadership.