A) I'm not sure there's proof that an image of some democrats holding signs confirms that an entire generation (pay close attention to the word "entire", which I am quite sure is mere rhetoric) hasn't been taught economics.
B) I'm not part of the Democratic party, but voting democrat doesn't make one an ignorant fool, and neither does voting Republican. (It's still an intellectual decision not to take sides, though) Let's face it, the fact that Donald Trump is president won't be able to fix the economy, yet several still voted for him, not because they cared about the economy though.
C) Bernie was better than Hillary. By friggin' miles. Bernie payed more attention to actual issues in America while Hillary tried to attract the attention of very manipulative millennials...