Honestly, living in Germany, I don't feel like the allies 'crushed the civilian population' and I had plenty of talks with the war as well as post-war generation in and outside of my family. Also, I don't think that Germany is 'great friends' with the USA - rather it seems to me that we're partners out of necessity and that especially the US looks at Germany increasingly as part of their empire.
In the end, there is no friendship amongst nations, but mutual interests. Between the people of nations can be sympathy and maybe even something friendship alike, but I feel that much of the sympathy for the US in Germany, which was built up slowlyafter WWII,is dwindling away again.
That said, I think it is fair to say that Hamas aims at civilians, while the Israelis do accept that civilian deaths will occur. The truth is also, that civilian deaths are eventually inavoidable in an armed conflict. Neither the Geneva conventions nor human right treaties change that.
And yes, there'd be prolly much greater civilian losses on the Israeli side, if they weren't technologically superior. So, it's kind'a difficult to add up the deaths of civilians caused by the Israelis against the deaths that they prevented on their own side of the border. In the end it's always civilians suffering most, the people who never signed up for any of this. Yet, it's not like that's all the Israelis fault, the Hamas plays a hughe part there as well. It's really not like you can declare peace unilaterally, especially not in assymetric warfare where there is no clear point when enemy combatants and territory are won.
And yah, I can't think of any western nation that really can lay claim to being innocent, either. There are so many wars fought around the world in the name of the interests of the westen industrialized countries, so many people dying for our relative wealth on a daily basis, that it seems quite self-righteous to me if I hear people moralizing about how the IDF should deal with this.
In an ideal worldthese conflicts could be solved easily and without loss of innocent lives. We don't live in a perfect, ideal world, though. Western civilisation should know that from the writings of the greek philosophers and the Genesis story (Yah, the Adam and Eve story is really not a scientific article about the creation of the world, surprise!), really.