A mob is a group of persons with heads but no brains. Thomas Fuller.

The mob has many heads, but no brains

A mob is a group of persons with heads but no brains

panicked people didn't listen to reason and didn't want to hear the truth.

It is proof of a bad cause when it is applauded by the mob.

The nose of a mob is its imagination. By this, at any time, it can be quietly led.