What's really weird to me is that there was basically no good pro-Bernie music or art that I ever saw. With all his fired-up youth support I would have expected a lot more utopian music and art.
A utopian movement needs art of some sort to inspire people. The inspirational power of pie charts and line graphs seems inherently limited.
If you want more trains in America, you won't do it by making driving less attractive. People will revolt and you'll lose to pro-car people at the ballot box. Instead, figure out how to make Americans more enthusiastic about riding trains.
Some of this is psychological. Since Americans aren't used to riding trains, you have to figure out smart ways of getting them to think about changing their lifestyle. This is basically a form of marketing. (For me, this was living in Japan, but obviously that doesn't scale up.)
Some of it is about development. You have to allow dense development near train stations, so more people A) live near train stations, and B) can take the train to shop and eat out.