But Hamas would rather use human shields and kill as many Palestinians as possible.

Do stay rational. If Hamas is using human shields who are then killed, the killing was done by those who do the shooting, not Hamas. If you know that your adversary is using human shields but you fire anyway, you are knowingly killing innocent people. You can't claim that your enemy killed people who died by your bombs and bullets. You did the killing and you'd better have a better defence than claiming that they did it all along. Of course, you may feel you've found out afterwards that human shields were used, but you would then have difficulty proving your human shield contention in any case. The first casualty of war is truth. The use of human shields is an attempt to stop your adversary from shooting, not "kill as many Palestinians as possible". My point is to put you right on this, not to defend the use of human shields: putting innocent people in harm's way deliberately is indefensible. But I think that many people use the human shield argument far too readily. Including you, as you do not even understand the concept at all by the looks of it.