
Furthermore, even in rare cases where there was the damage, the losing parties did not heed the defecting voters: the Republicans did not become notably friendlier to urban workers after Weaver, nor did the Democrats become more notably anti-corporate from the perceived threat of Nader.
Brexit — a group of angry people winning a fight — easily inspires other groups of angry people to start a similar fight, empowered with the idea that they may win. That alone can trigger chain reactions. A nuclear explosion is not caused by one atom splitting, but by the impact of the first atom that splits causing multiple other atoms near it to split, and they in turn causing multiple atoms to split. The exponential increase in atoms splitting, and their combined energy is the bomb. That is how World War One started and, ironically how World War Two ended.
Then after the War to end all Wars, we went and had another one. Again, for a historian it was quite predictable. Lead people to feel they have lost control of their country and destiny, people look for scapegoats, a charismatic leader captures the popular mood, and singles out that scapegoat. He talks in rhetoric that has no detail, and drums up anger and hatred. Soon the masses start to move as one, without any logic driving their actions, and the whole becomes unstoppable.