Good question. I've heard this argument before in the media and other places:
'...But the Fed was created to prevent the banking panics in the 19th Century!"
We need our advocates to counter that with:
"And it was the same people who caused those panics through fractional reserve lending, who later got together to form the Federal Reserve System. Looks like we put the wolf in charge of the hen house."
I haven't heard that counterpoint brought up in the exchanges, and it's high time it's put back in their faces. Blowback's a bitch, baby!