Thomas Sowell explains how insurgent movements generally have a more just vision for the world in their early stages, and become tyrannical after they seize power.

He gives the example of the vision laid out by MLK in the 1960s ("judged by the content of their character, not the color of their skin"), and contrasts it with that of modern social justice types, and also compares Christianity when it was persecuted in the Roman Empire, to when it became the official religion of the Roman Empire.