"It is that the use of terror is justified, if it is a way of achieving a good end. It is the position which in practice dominated the 20th Century, and made it one of the bloodiest in history"

Yes, that is what I mean. Terror is not inherently evil or even bad, lest we forget that Hollows eve is around the corner.

But the real killer in the 20th century was Socialism. Stalin had the miserable distinction of killing more of his own people than WWII. The Chinese killed over 30 million, Pol Pot has the distinction of killing off the highest percentage of his own people, and we can't forget the N Koreans starving millions of their people as well. Terrorism was but a drop in the bucket compared to socialism.