Contrary to popular belief, the catchphrase 'hate the sin but love the sinner' is not of biblical origin, nor is it Catholic doctrine.
"Hate the sin but love the sinner" is a seemingly compassionate catchphrase tailor-made for today's milieu in which human behavior is no longer judged by the criteria of right or wrong, but rather from the vagaries of environment or psychophysiology (a pseudo-science that has been successful in masquerading psychosis and sanity as one and the same). These are delusions put forth which serve well to waylay right conscience and subvert accountability for evildoing.