It's an universal law-- intolerance is the first sign of an inadequate education. An ill-educated person behaves with arrogant impatience, whereas truly profound education breeds humility.
The line separating good and evil passes not through states, nor between classes, nor between political parties either - but right through every human heart - and through all human hearts. This line shifts. Inside us, it oscillates with the years. And even within hearts overwhelmed by evil, one small bridgehead of good is retained.