When Luu Thi Hieu, who has cerebal palsy, drives her wheelchair along a main road in Hanoi, having been unable to access the pavement, it is not unusual for a passing motorcyclist to shout something along the lines of, ‘‘If you need a wheelchair, you should stay home.”
For Hieu, 32, it’s more grist to her growing social-media mill: she has amassed millions of views on TikTok for her activism.