It's because they want to reject the system. That's why so many people supported Bernie. In reality they don't understand the system they want to oppose because it includes the news networks, upper education, entertainment sector, social media, etc.

That's why whenever they start something like Occupy Wall Street it instantly gets infiltrated and collapses, because they cannot distinguish between enemy and friend. They bought into the idea that "you should not discriminate" so much that it actually prevents them from correctly parsing the real world around them.