History proves this is the most effective way to promote rapid change.

Though not always the one you would have wanted.

Change, yes. Though not always in the direction you expect. Or desire.

As Egypt has shown, this is the quickest way to replace one power-hungry sociopath with another.

You can easily change which despot rules you via this method.

I dunno. I think there has been more social change through the introduction of technologies than through coups and revolutions. Things like the motor car or the telephone cause seismic shifts in a culture.