...She turns normally reasonable people into co-conspirators in the abuse. Almost none of them have the capacity to step above the rhetoric to see that perhaps it is they who are now guilty of the same behaviors. As they begin to act on the victim they also blame the victim for defending him/herself. This is where things can begin to escalate without taking direct action. The reaction of the victim now becomes a reason for more abuse because the context has been distorted...
1. Rumors to Manipulate and Proxy Others: Add a word, take a word, share only part of the information, expand things, tell people "juicy" information nuggets that get them upset. Rumors and lies are designed to do damage and are a form of aggression. Bullies spread rumors to get people to "gang" up on someone and punish them for perceived wrong doings. The actual wrong doings may have nothing to do with what the bully says. The inflammatory and often delusional stories are designed to excite and anger others to get them to act.
2. Covers Feelings of Powerlessness: Bullies feel powerless. Somewhere in their life they were left damaged and traumatized. Lying, bullying, and manipulating others seeks to create a sense of power. That power comes from influencing others through manufactured crisis. You can tell the passive-aggressive powerlessness by watching how they have made a habit talking negatively about others. There is constant comparisons. Its a pattern of feeling powerless and then trying to control others through anti-social behavior (clinical definition).
3. It Lowers Feelings of Guilt: When you have friends and people agree with you, even if they were provided with lies, you don't feel as guilty. The inner turmoil the bully feels is mitigated by their support network who doesn't question the logic being offered. Most of us know from experience that people just sort of agree with us if we don't give all of the information or are not making it explicitly clear that we want "honest" feedback. Thus our friends and family members help us feel as though we are "right" thereby reducing the cognitive dissonance associated with guilt.
4. Groups Take Less Responsibility: We have all watched shocking videos on YouTube, News, or the Web where groups have brutalized someone; even killing victims in plain sight. Sometimes that person has done nothing wrong except try and avoid being in a conflict. If you are a police officer, or sheriff, much of their job is dealing with issues related to the inability of people to take responsibility. Even criminals that have been convicted through evidence and a court of law scream it wasn't their fault all the way to prison! The more people a bully can get involved, the more damage they cause and the less responsibility the bully takes. Sometimes groups become so destructive they openly attack people in public in front of a crowd of bystanders.
5. It Hides Painful Secrets: Bullies are all about hiding their pain. Bullying is a form of aggression based on trauma. This is one of the reasons why aggression is so pathological. As the bully projects onto a target, he/she takes the spotlight off of themselves and puts it on the victim. The bully no longer needs to deal with their issues because the target is forced to take responsibility for them. This is one reason why much of what bullies say are more a reflection of the bully's issues. Targets are not chosen randomly. Usually they are people the bully envies and often are intelligent, sensitive, and caring.
6. Bullies Need Validation: Bullies need validation that they are important. Somewhere in their life they were made to feel unwanted. This is the tragedy that bullying creates more bullies. Their boundaries were often violated by parents, uncles, and others. When they get people to support their behavior they feel a sense of validation that they are important. Attacking others puts them somewhere above the victim. Proxies help validate the "worthiness" of the bully and the "worthlessness" of the victim.
http://www.academic-capital.net/2019/02/motivations-of-bullies-to-spread-rumors.html