Selfie-snapping tourists railed against the closure of Hanoi's 'train street' on Thursday after police blocked off the Instragram-famous tracks for safety reasons.The narrow railway corridor in central Hanoi has become a hotspot among visitors seeking the perfect holiday snap on the tracks - often dodging trains that rumble through daily. But Hanoi authorities said this week they would block people from the tracks to avoid accidents, and police on Thursday erected barr