[DaUR]

Great comment. Agree with you on the solutions (sourcing).

I don't have a clearly defined political identity, so, mostly by accident at first, I tried changing my own ideology. I discovered every ideology has a pretty much coherent worldview. Just frame the world in a way that's unjust, and threatens you personally in some way, assign low social status to opponents, and make it a part of my identity. It's crazy how I managed to identify with everyone from the social-justice-left to the alt-right, including the Clintonites, Trumpers and social conservatives in between). Fun to do if you want to learn about cognitive dissonance.

The only thing that determines which ideology you end up with isn't facts, but temperament (personality) and social circle.

All of these ideologies are coherent, and therefore don't provoke much cognitive dissonance (if they did these ideologies wouldn't be evolutionarily "fit", and the ideologies would die out). BTW, if Facebook wanted to be more evil/involved, they could change the political opinions of vast swathes of the population by deliberately triggering cognitive dissonance, and then exposing them to material from the other side when they're much more receptive to it. The only reason why that doesn't work so often currently is that cognitive dissonance hasn't yet been completely weaponized, but as we understand it more, it will be.