Those weren't the exact words; I think she said "You've picked on the wrong families", but the message was clear. The idea that a DA cannot be sued is one of those theories which, in real life, can only be stretched so far. Fong has made the entire legal profession in NC look like a bunch of clowns, and they are seriously pissed. They do not intend to leave Fong with any sort of legal shield against lawsuits.
I agree on the message, I have a problem with someone putting quote markings around their interpretation of what was said.