What Will Bernie Sanders and His Supporters Learn from New York?

If my social-media feeds are any indication, Hillary Clinton’s big victory in the New York Democratic primary has left many of Bernie Sanders’s supporters feeling upset, angry, and disillusioned. Some are blaming voter fraud, others are blaming the media, and others are simply aghast. On Facebook, one Bernie enthusiast asked, how can so many people have voted for Hillary? I didn’t meet anybody who was voting for her.