....
The Nazi party campaigned on socialist ideas (and lost), and labeled themselves socialists, but as soon as they assumed power Hitler immediately had the senior officials of every opposition political party murdered along with their families and other supporters.

Then he invaded a bunch of countries and forced every man to either fight for him or have their family murdered.

He murdered almost 10 million people just because they were Jewish, gay, disabled or suspected of criticizing the Nazi party.

Using the Nazi party as an example of why someone shouldn't vote for Bernie is pretty silly unless you believe Bernie has some secret agenda to become a dictator.