For Ms. Coleman, the real mainstream moment for online vigilantism was in 2015, when an image of a dentist standing over a lion he had shot swiftly spread on social media. The lion was Cecil, a well-known conservation icon. Animal lovers seethed. The actress Mia Farrow even posted the dentist’s home address on Twitter.
this is a wonderful example of a way that social media can highlight the cruelty of the world and bring attention to people's gross actions and words so that they cannot get away with it any longer without going checked