... a firewall, that is. And her victory speech tonight was, in effect, the beginning of the general election, with its themes. "Imagine a future shaped by love and kindness" is at once directed at Trump and at Bernie's followers. She's saying "welcome." And she's also promising to be a warrior against hate, a warrior for compassion. Not a bad theory of the case.
Update: To put that theory of the case very succinctly: Tough. Love.