Mahatma Gandhi writes in his autobiography, The Story of My Experiments With Truth,

Hate the sin and not the sinner is a precept which, though easy enough to understand, is rarely practiced, and that is why the poison of hatred spreads in the world… . It is quite proper to resist and attack a system, but to resist and attack its author is tantamount to resisting and attacking oneself. for we are all tarred with the same brush, and are children of one and the same Creator, and as such the divine powers within us are infinite. To slight a single human being is to slight those divine powers, and thus to harm not only that being but with him the whole world.