Perhaps, just perhaps you can wrap your tiny little mind around the aspect that many are supporting Bernie because they are opposed to the 'establishment' being in control. Bernie has tapped into the anger and discontent in the same vain as Trump.
Reagan got alot of support from Democrats. I'm sure that made Reagan a commie as well.
Bernie is a communist. Anybody supporting a communist is a communist. I'm sorry if you're not able to comprehend this simple concept.