American essayist, philosopher, and leader of the transcendentalist movement in the early 19th century Ralph Waldo Emerson wrote:
“A mob is man voluntarily descending to the nature of the beast.”
When it comes to a zombie mob one only need make a slight change to the statement:
“A zombie mob is a man involuntarily descending to the nature of the beast.”
So in essence the only difference between a human mob and a zombie mob is the driving force behind the action. One acts with some semblance of choice, and the other acts because of a forced biological compulsion.
In the end the result of their violent frenzy is often eerily similar, except of course for the fact that human mobs generally don’t eat people.