Joan Rivers -- Sarah Palin Is 'Stupid and a Threat'

1/17/2011 2:43 PM PST BY TMZ STAFF
Sarah Palin deserves criticism -- and BLAME -- for the horrifying shooting in Tucson, AZ ... this according to Joan Rivers.

Joan was at the Critic's Choice Awards party in Hollywood this weekend when things turned political -- and Joan exclaimed ... "This woman is just stupid and a threat."

So we gotta ask...