The 20th century saw the rise and fall of many subcultures. 20th century Fin de siècle In the early part of the 20th century, subcultures were mostly informal groupings of like-minded individuals with the same views or lifestyle. The Bloomsbury group in London was one example, providing a place where the diverse talents of people like Virginia Woolf, Leonard Woolf, John Maynard Keynes, and E.M. Forster could interact. Other pre-World War I subcultures were smaller social groupings of hobbyists or a matter of style and philosophy amongst artists and bohemian poets. In Germany, from 1896, there developed a movement of young men (and later young women) which focused on freedom and natural environments. Called Wandervogel (translated as "hikers", "ramblers" or, more precisely, "migratory birds"), they wanted to throw off the strict rules of society and be more open and natural. The first known organized club for nudists, Freilichtpark (Free-Light Park), was opened near Hamburg, Germany, in 1903. In Italy, a popular art movement and philosophy called Futurism championed change, speed, violence and machines. World War I After the First World War (1914–18) hair styles changed: the wartime trenches were infested with lice and fleas, so soldiers were forced to shave their heads. Consequently, men with short hair appeared to have been at the front in the war, while men with longer hair might be thought of as pacifists and cowards, even suspected of desertion. Some artists managed to avoid the war by sitting it out in neutral Switzerland. A group of artists in Zürich invented Dadaism as an anti-war, anti-art, art movement, and a parody of the pro-violent attitudes of Futurism. 1920s In the 1920s, American jazz music and motor cars were at the centre of a European subculture which began to break the rules of social etiquette and the class system (See also Swing Kids and Flappers). In America, the same "flaming youth" subculture was "running wild" but with the added complication of alcohol prohibition. Canada had prohibition in some areas, but for the most part, thirsty Americans coming over the border found an oasis. As a result, smuggling escalated as crime gangs became organized. In the southern United States, Mexico and Cuba were popular with drinkers. Thus, a drinking subculture grew in size and a crime subculture grew along with it. Other drugs were used as alternatives to alcohol. When prohibition ended, the subculture of drink, drugs and