They're making noise but they're not being heard. No one with any ability to instigate change is listening to them. Just because they're talking doesn't mean anyone is taking them seriously. For the record, I definitely think they should be taken seriously.
I strongly believe that the people listening to them right now, will be the future leaders of America. I hope to be one of them.
Bernie Sanders (who is currently a United States Senator) nearly won the Dem nomination in the last election.