Things you buy through our links may earn New York a commission.As the decade began, there were rea­sons to be optimistic: America had elected its first black president, and despite a global recession just two years earlier, the world hadn’t cascaded into total financial collapse. Obama­care, for all its flaws, was passed, and then came the Iran deal and the Paris climate accords. Sure, there were danger signs: the anger of the tea party, the slow hollowing out of legacy news media, a troubling sense that somehow the bankers got away with it. But then maybe the immediacy of social media...…Things you buy through our links may earn New York a commission.As the decade began, there were rea­sons to be optimistic: America had elected its first black president, and despite a global recession just two years earlier, the world hadn’t cascaded into total financial collapse. Obama­care, for all its flaws, was passed, and then came the Iran deal and the Paris climate accords. Sure, there were danger signs: the anger of the tea party, the slow hollowing out of legacy news media, a troubling sense that somehow the bankers got away with it. But then maybe the immediacy of social media...WW…