Sanders could have turned the primary race around if he aggressively exposed Biden as a demented right-wing warmongering privatizer (and pathological liar).
He was way too soft. Huge missed opportunity.
Like Corbyn in the UK, he's way too nice. He refuses to take the gloves off, even when defending himself from smears
People want a strong leader. But the left has been too infected by liberal mealy-mouthed politeness and "anti-authoritarianism."
Are you going to lead, or not?