It is limited to verbal assaults and sabotage. Bullies commonly adopt surprise and secrecy to gain leverage over Targets. Bullies all adopted more than one spirit-crushing technique. Witnesses tended to see making unreasonable demands, stealing credit, blaming and threatening job loss as bigger problems than did Targets themselves. If bullying was a civil interaction, independence would be rewarded instead of having attack as a consequence.
Bullying is as capricious and surprising as the bully's personality is unpredictable.
Others quit after being driven out. Public actions not only humiliate the Target but serve notice to the group that anyone could next fall into the predator's crosshairs. Privacy enables deniability. Targets are a diverse group of normal, talented people. Bullying devastates the Target's emotional stability and can last a long time.