Becuase most of them are under employed and unempoyed and live in their parents basement!  They know nothing is going to change with clinton but hoping may be just may be somethings can change to get the economey going.

The report says 22% will vote for Trump.  Looking at the demeanor of the interviewees, they look dazed and bewildered. After all, the ultra left and right are both sides of the same coin. In this case, radical left is as ignorant and stupid as the right.   

Also, some of them believe by electing Trump, they will pave the road for a far more radical Bernie (s) in 2020.