Never forget.
To be fair, Germans do have somewhat of an excuse.
A lost war, Treaty of Versailles and what it entailed. Hyperinflation, massive destruction of wealth. Great Depression, which made the US demand back all the loans Germany heavily depended on. You can, in hindsight, somehow understand how, everything taken together, and happening within 15 years, could destabilize a country and provide radicals with a shot.