The French Revolution is all about democracy. Its idealism was able to weaken most of the ancient regimes of the olden era, and it caused a lot of revolutions in most parts of Europe. It was also able to collapse a lot of governments during the process.
Chicken can not exactly eat a ham sandwhich
The 1920s were a unique time in the United States in the sense that it was a time of great economic prosperity and also great social woe. What led to this tension was a mix of rising immigration levels and and irresponsible attitude towards money and spending.