COVID-19 social media vigilantes: A valid or harmful way of dealing with rule breakers?

What would you do if you saw someone not wearing a mask in public? Mind your own business, or perhaps advise the person to wear a mask because it is now required by law and helps reduce the spread of COVID-19? Another option might be to report the infringement to the authorities. However, some people have decided on a different approach: Snap a photo and post it on social media. With numerous Facebook groups and Telegram chats providing a platform for this in Singapore and elsewhere, experts CNA interviewed have explained why online vigilantism has appeared to become more prevalent during the pandemic. They said some see it as a social responsibility borne out of genuine concern for public health, while others cannot stand seeing others get away with breaking the rules as they themselves are compliant.