Are you saying you dismiss Snopes as being left-biased, therefore the matter over whether "Hillary Clinton was fired with prejudice" is still not resolved?
And until Hillary Clinton (or presumably the WIC) come out and directly either confirm or deny that statement, then repeating the statement is "fair game"?
But doesn't that put the onus on the subject to confirm or deny every single tinpot, falsehood statement out there, otherwise its safe to consider it the truth?
Is it similar to the example you gave of being called a racist and responding with "We don't care"? Should Hillary Clinton respond to the statement with "I don't care if you think I was fired with prejudice from the WIC"? Is that what you are saying? How would that stop the "mistruth" from being repeated?
(apologies, I'm from the UK so this isn't a line of thought I've come across)
Edit: Bit of rewording for clarity