Bernie Sanders told his fans to support Hillary and they booed him. But as I've always said, Bernie supporters were never really for him. They seized on him as a convenient radical. Especially once Elizabeth Warren wouldn't come out to play.
The entire Bernie cult of personality was a clumsy makeshift affair assembled by the left. It's going to be disassembled and forgotten just as quickly now that Bernie has sold out. Just about anyone could have stepped into Bernie's shoes and gotten the same treatment.
It meant nothing and it means nothing.
The left isn't really for anything. It's against things. It wants a totalitarian state to destroy what is there under the guise of saving people from themselves. But it will ultimately turn on its own heroes.