"Let he (she) who is without sin cast the first -- --, etc.
I agree with Harriet and Henry, too.
Anyone who claims to be without prejudice is blind to
his/her own roots and upbringing.  Especially in this age of
acute awareness to attitudes in ALL areas of life.
"The acorn never falls far from the oak tree."
MOST IMPORTANT that we all be aware (as much as possible)
of the sources (and/or motives) of our beliefs and
question some of them from time to time.