The entire purpose of Islamic Jihad and Hamas is to destroy Israel and kill all the Jews. That is the only reason those organizations exist. They deliberately fire thousands of rockets at civilians with the explicit goal of killing as many innocent people as possible, and the only reason the death toll in Israel isn't in the thousands is because they have a missile defense system that shoots down 90% of the rockets and built many bomb shelters for people to run to when rockets inevitably get through. Hamas and Islamic Jihad are so focused on killing that they don't care that hundreds of their own rockets landed in Gaza and killed dozens of their own people. But sure, being stronger automatically makes Israel the bad guy. By this logic the US was the bad guy in World War 2 and Japan the innocent victim since the US was always the stronger of the 2.
First of all, both parties can simultaneously be in the wrong. Israel has done a lot which should be condemned. The same can be said for Hamas.
Second, the use of force by the United States in Japan is very much not the easy slam dunk metaphor you think it is. There is a lot to criticize in the US' actions during WW2.
Things rarely boil down to "Good vs Evil" and we need to stop treating complicated international disputes like children's stories.