Here’s another example of why you should always, always be careful about what you post online. On Sunday (Nov 3), Hongkong singer Joey Yung uploaded a selfie of herself on a plane wearing a surgical mask and her hair casually covering one eye. She also wrote this caption: “I only know I want to fly”. As soon as it was posted, Chinese netizens immediately assumed that Joey was supporting the anti-Beijing protests in Hongkong. It didn’t help that a Hongkong pro-democracy netizen had commented: “Wearing a mask to fly with you too”.