Almost all of human history can be described as replacing one group of armed thugs with another. However there are some exceptions. There are times when society is radically changed in short amounts of time, as V.I Lenin once said, “There are decades when nothing happens, and there are weeks when decades happen”. Often these ‘weeks’ where decades seem to take place have historically been bloody. Look at the emergence of feudalism in Europe and Japan. Look at the period of change from Feudal to Capitalist society. The French Revolution and World War 1 were the horrifically bloody aftermath of such rapid, radical social change. You can also look at the Chinese and Bolshevik revolutions. Whereby early capitalist societies with remnants of feudalism are rapidly and radically overthrown. If you told a 20th century historian that Russia and China, two of the poorest, most backwards countries on the face of the earth would emerge as the most powerful and advanced nations in human history they would have laughed in your face. Yet it happened, for all the blood and sweat that was shed it happened. We are moving ever foreword to something, what that is I can only speculate, and hope for.