Are you familiar with the principle of zealous representation? The entire idea behind our legal system is that we must always push the strength of both sides to the limit, so that we can be as sure as possible that the person charged with a crime is not being tried by a society with preconceived conclusions, but by BLIND justice. A defense attorney is duty-bound to represent his or her client with as much zeal as he or she can muster, otherwise we run the risk of steamrolling over innocent people, (which happens plenty as it is.)
And I love it when people spit out "atheistic" as though it's some kind of venomous, hell-spawned curse.