Yeah imagine a country getting freaked out over a few dozens of millions of dead and going crazy and passing a bunch of insane laws and having its politics go insane. It’s not like that doesn’t describe post 9/11 America.
The timing was a bit different though: first the country got crazy, then it passed a bunch of insane laws, then a few dozens of millions died, then they started WW2 (Molotov–Ribbentrop pact), and then a few more millions died.