
Dogpiling, dog-piling or simply a piling-on is a form of online harassment or online abuse characterized by having groups of harassers target the same victim. Examples of online abuse include flaming, doxing (online release of personal information without consent), impersonation, and public shaming. Dog-pilers often focus on harassing, exposing, or punishing a target for an opinion that the group does not agree with, or just simply for the sake of being a bully and targeting a victim. Participants use criticism and/or insults to target a single person. In some definitions, it also includes sending private messages. Dogpiling can happen on online social media platforms when someone's post gets viral, and gets a lot of attention online. From the attention, people who don't agree with the online post or video will leave negative comments to the social media user. As more people leave negative comments, it turns into a larger group hating and targeting the user. Dogpiling is one of the forms of online harassment, and it can overlap with public shaming and cyberbullying.
The word comes from the dog-pile in American football, in which a person who has the ball is targeted by the entire opposing team who come and jump on him. It became popular with the rise of social networks.
Dogpiling can make a person feel overwhelmed when receiving a large number of comments and notifications during a short amount of time. Receiving this much negative online activity can cause the victim to feel like they cannot openly share their thoughts and feelings without getting judged or criticized. This can make the targeted person not feel comfortable to participate on online platforms due to the high volume of backlash they received. Victims of dogpiling may feel less self-esteem, various emotional reactions, self-harm ideations, and suicidal thoughts. Adolescents, particularly female adolescents, are more likely to be susceptible to these effects from dogpiling. Not only does dogpiling affect social media and online community users, it also affects journalist's ability to be able to to report and share information. Online users who may not agree with the journalists articles or posts, use online harassment to strike back at journalists. The harassment is intended to silence and discourage journalists from reporting. It could result to psychological stress and damaged reputations which could lead to journalists limiting the topics they discuss or even leave their profession. Journalists could be intimidated by the online harassment and might censor what subjects they share and report, which can affect public dialogue.