The fact is that Israel acted within the law in Gaza.
A war criminal who chooses to fight from civilian areas must not be allowed to gain from his crime, or other criminals would emulate them.

Israel had a right and a duty to strike back at criminals who repeatedly attempted to commit atrocities against Israeli civilians, wherever they chose to commit their war crimes.

Israel acted within International Law, and is guilty of no atrocities.
Syria commits them every day, so why do you always and only attack Israel?