There's also room for causality the other way, here. If feel you have a lot in common with your compatriots, and generally trust them, then you are (I claim) mo

There's also room for causality the other way, here. If feel you have a lot in common with your compatriots, and generally trust them, then you are (I claim) more likely to support paying taxes to support those who are having a rough time. High trust can lead to lower inequality. Conversely, if you already feel you have nothing in common with others, then why not vote (if you have everything) to give them nothing, or (if you have nothing) why not vote to seize their property and distribute it?