And then it dawned on me, I don’t have a clue how it might’ve felt like to live through the great depression, or in Hitler’s Germany, or under Mao’s China, or inside Stalin’s Gulags...

The financial crisis that hit the world in 2007 is worse than The Great Depression. Clearly, you haven't read the rate of suicide climbing up. As for genocides, happened and it's still happening.

If we ignore politics and focus on improving our own personal situations and help whoever we can in the way, that could be enough.

No way. If you don't deal with politics, politics will deal with you. I am trying to stay out of my country's politics. Not possible. I am paying each month higher taxes because of the new elected mayor in the city. I am pissed.

I would like to congratulate using the term "Nazi", majority use the term "Fascism" which is totally different. Nazi killed anyone who, according to them, was not Aryan descendant. (They put hundreds of thousands Polish in the Nazi concentration camps)

Overall, I would agree with you. But it's hard to see voluntarism working when humans are driven to act by self-interest :) I am not saying it's impossible but ...