Earlier quoted context omitted.
IIRC ancient Athens was a direct democracy, which the Netherlands are not (and is technically a constitutional monarchy). Liechtenstein and some Swiss cantons are the few remaining examples of direct democracy. https://en.wikipedia.org/wiki/Direct_democracy#Examples
If Athens is legitimately a democracy then I am confused how you can come to the conclusion "one thing is for certain, a democracy can't be authoritarian by definition." Athens killed Socrates using an authoritarian law after all.
Any state, democracy included, can be a tyrant (i.e. cruel and oppressive) against its perceived enemies.