A catholic priest couldn't turn you in, and a smart one probably knows a lot about some kinds of human biases.
That's not true about the confidentiality of priests... a priest has the same legal obligation to turn in someone that is a danger to themselves or others as a therapist.
Something a number of LWers should probably be cautious of.
http://www.nature.com/news/2011/110822/full/476373a.html