There's been some interesting discussion in the "comments" field (here, e.g.) on whether factual corrections "backfire," thereby entrenching mistaken beliefs that are ideologically congenial.
So here are a couple more logs for the fire on that.
1st, an interview of Brendan Nyhan, who speculates on whether his own studies suggesting a backfire effect might be wrong ("Walking back the backfire effect"). His willingness to question his own work displays admirable scholarly chracter.
I haven't yet read it closely -- hope to later today -- but am curious to see what others think of it.