Due the new technology available allowing movies to have both sound and colour the movie industry in Hollywood grew fast as did the number of Cinemas showing the films. In 1919 laws were passed for the Prohibition of consumption and even possession of alcohol making them illegal and due to these laws the 20's provided some of the most well known gangsters a means to create vast wealth by opening illegal bars called speak easiest to provide drinks for the people that required alcoholic beverages. Possibly the most well known of these was Al Capone
Also this period saw the growth of the Ku Klux Klan and the growth of the Vigilante groups who took the law into their own hands and lynched victims most often black without any trial.
The other great change in people's lives came from an invention and technology prior to the 20's but after World War I became a significant part of life providing news and entertainment to the masses in their homes , this was the birth of commercial radio for all.
The 1920s brought many changes in American education. The post—World War I baby boom led to dramatic increases in the numbers of students attending school and a marked rise in the demand for teachers. Social and economic factors produced such phenomena as the Red Scare, religious controversy, and political strife, which in turn influenced education in the United States. New classes in the sciences, physical education, home economics, geography, and industrial arts expanded the curriculum from the traditional focus on the Three Rs (readin', ritin', and' rithmetic).