A tree in Hanoi has become a symbol of how Vietnam’s Gen Z views its country – but it is not the enviable growth story sold by the government.Tree 55 on Nguyen Huy Tu Street – now dubbed the “Justice Tree” – was buried under bouquets earlier this month. It was an act of digital-age defiance over the death of a teenager in a road traffic accident in the area that went unpunished.Response to the accident, which triggered a belated explanation from the state, reveals unease with a system many...