Attack on Titan is and always has been imperialist propaganda written by a Nazi supporter. The idea of the walls and their fragility is meant to criticize Japan’s antiwar policy, and the Titans coming back after 100 years is meant to imply that if Japan doesn’t start having wars and breaking down their “walls” and conquering the East again, other countries will come to terrorize the region. What bothers me most having watched the first season of it is the line about “Living like livestock”. It asserts the notion that to live without imperialism is a form of complacency, like somehow the country isn’t living life to its fullest if it isn’t out pillaging and raping the peoples of Korea, Manchuria, Indonesia, the Pacific Islands, etc. I will say that it’s actually really poorly written, so the ideas the writer has don’t come across super strongly, but it’s still seriously dangerous stuff.
Add to that the fact that so many characters have German names and that the setting seems to have a lot of european and specifically German vegetation and architecture becomes obvious that the writer wants viewers to feel nostalgic for the Axis Powers. It’s really infuriating to me as a Jewish person because it’s supporting a political climate under which the genocide of my people could resume even when we just now have the same Jewish population worldwide as we did pre-Holocaust. It’s fucked up and now that people are talking about it coming back for a second season after so long I want to urge you all to please boycott it.