Here is one type from popular literature that fits the pattern: Simplifying you can assume that most "classic types" of corporate psychopaths are simultaneously bullies.
This isolation is achieved through a wide variety of techniques, including refusing to socialize with the victim and criticizing the victim's communication manner or other socially-significant markers.
Here is a tutorial example of a bully behavior toward subordinate although the situation is slightly different: Something more about behavior characteristic of such guys Bill O' Reilly Goes Nuts.
Those guys can be very tenacious even facing much intellectually stronger opponents replacing arguments with showing Ron Paul schools Bill O' Reilly.
"Mobbing" -- a group activity at work in which one person is singled out to be eliminated is often the way bullies deal with their targets.
Study after study in psychology proves that people draw a perverse strength from the group and will do in a group what they would never do alone.