I wouldn't argue against a true human shield situation, but again, this is not that. Imagine if you shot someone being used as a human shield. You would be in jail pending an investigation and probably in jail even after that, regardless if it was on video or otherwise witnessed. There are no witnesses in Gaza, no documentation. Just Israel bombing kids and then claiming "Hamas was there." And even if they did have documentation, they are not acting in immediate self defense. They are proactively taking steps to eliminate a perceived threat, which is an entirely different matter with different moral considerations.