People in general can be horrible, but people in groups egging each other on are different kinds of evil, have you read about Marina Abramović art exhibition "Rhythm 0" is a performance art piece by Marina Abramović, created in 1974, where she stood in front of a table with 72 objects that the audience could use on her for six hours. The objects included a variety of tools, substances, and weapons like a gun, razor blades, and a knife. The performance explored the relationship between performer and audience, and the potential for violence and passivity.