Earlier quoted context omitted.
Social media is easy to blame, but we had something similar, but worse happening in Germany well before the invention of the computer even. Human society has not developed an antidote to charismatic demagogues yet I'm afraid.
Sorry, but Germany had just suffered a humiliating defeat and was punished severely for WWI in which all sides were equally guilty for all of it. When did something of this magnitude just happen in the USA? P.S.: This does not excuse Germany's actions wrt. WWII but it does help to explain.
Not true, while Germany was not solely responsible, it and Austria-Hungary were much more responsible than others.