People like Bernie and AOC are not progressive. They're nothing more than sheep dogs for the party to keep people locked in the party with false promises of eventually having a seat at the table. Going back to 1984 Democrats have always had a sheepdog to keep voters herded up like sheep.

People need to get out of the mindset of reform. We plainly seen that reform over the last hundred years does not work. Eugene Debs talked about Democrats trying to reform their party 100 years ago. WEB DuBois talked about Democrats trying to reform their party 60 years ago. They believe that if they change enough cogs within the machine, the machine will operate differently. It's time to scrap the machine

so why advocate voting for progressive democrats when moderate democrats will not allow any progressive members to control the democrat party?

Because the centrist wing has lost all credibility and we're seeing their power to block progressives waning.