"But Hamas would rather use human shields and kill as many Palestinians as possible."
Israel has been using human shield in the correct sense throughout the conflict.
Israeli troops placed children in front of military vehicles and forced them to walk in front of them when entering unknown territory - it was condemned by the U.N. for doing so.
During one of Israel's incursions into Gazan civilian areas, on the way to konck down a few homes, it set up missile launching bases in schoolyards - 'Christians for Peace' representatives described how they carred kindergarten children out of the range of the fighting, particularly to save them from being blinded by the tear gas.   
Bombing civilian, non-combatant area and slaughtering civilians in order to stop rocket attacks is an extreme case of using helpless human beings for military objectives.
Threatening, "if YOU don't stop firing rockets, we'll kill THEM and destroy THEIR homes, is human-shielding in the extreme.
Whining about one side using 'human shields' while ignoring the fact that the team they are cheering for is doing the exactly the same thing in spades is partisan bullshit.   
This is a shitty war being fought by shitty people led by shitty politicians - and being supported by inhuman agenda- pushers.
Dirty hands all round.
Jim Carroll