Because Hamas deliberately placed itself among the patients at the hospital, a war crime that you don't seem very upset about. The human shield tactic can never be allowed to work or it will become the norm in all wars. As it was before the laws of war.
The thing about human shields is that no one is forcing the IDF to shoot/bomb them. If the IDF knows that civilians are being used as human shields, maybe they should use some other tactic to prevent loss of civilian life? Instead, they still strike.
They are all more than happy to commit war crimes against the Jews, and against liberals, who by their dimbulb lights would be anyone without a blood thirsty hatred of the Jews. You know. Like Tojo. Or Cyrus the Great. Or William the Conqueror. Or Genghis Khan. It's a good thing they're so craven.