History Repeats Itself-present day USAPolitics vs WW11

I have just watched the first half hour of "World War11 in color" on Netflix and it was as if I were watching present day world events. The world's troubled financial situation, the military buildup by most countries, even those that can least afford it like Russia, and the lack of strong political leadership in 3rd world countries like Africa leave me believing that we are on the brink of global war. When entertainers like Donald Trump can dominate the news media with his outrageously offensive and bias comments, and still have strong support in the USA, it tells me that even a strong democracy like the USA can easily be swayed to become elitests like the prewar NAZI Germans.
I am afraid that common sence, reason, tolerance, acceptance and forgiveness, all hallmarks of a strong democracy, have given way to intolerance, unreasonableness, arrogance and radical reasoning. It's gone to the extent that arrogant, name calling millionaire politicians are revered, not dismissed. Reasonable democratic politicians are demonized for wanting social justice.
Are things going to get better before they get worse?