There had been two great concentrations of military power on Earth.

"What are we doing about the concentration of power in the media?"

We should not care about concentration of power in the Presidency.

Do we really want to embrace a similar concentration of power in the 21st century?

The concentration of power used to be seen in a dark light.

But as political scientists will tell you, concentration of power is rarely a good thing in the long run.

Washington should welcome those who run against concentration of power.

"But you always get nervous when there's a concentration of power."

The concentration of corporate power is still in a very early stage.

For the first time, the country became hostile to the private concentration of economic power.