It was said best in the movie Gladiator.
Gracchus: Fear and wonder, a powerful combination.
Falco: You really think people are going to be seduced by that?
Gracchus: I think he knows what Rome is. Rome is the mob. Conjure magic for them and they'll be distracted. Take away their freedom and still they'll roar. The beating heart of Rome is not the marble of the senate, it's the sand of the coliseum. He'll bring them death and they will love him for it.