Yuppies and hippies are two kinds of images of young people who represent mainstream American culture after World War II. They were born in the generation of 1946-1954 after World War II, and have grown up in the 1960s. Since 1950s, the "Beat Generation" represented by the poet Ginsburg began to rebel against the mainstream politics and ethics in the United States. Yuppies have long hair, smoke marijuana, say vulgar words and try their best to resist orthodoxy. In the university campus in the 1960s, this rebellious thought became more and more fierce. 1962, some students issued a declaration to openly challenge social orthodoxy. In California, the "Freedom Summer" movement is also very intense. These young people shouted the slogan of "doubt everything and overthrow orthodoxy", refused to trust people over 30, and went against the trend. These young people are most opposed to the Vietnam War. They burned conscription cards in public, or tried to evade military service, and even the social order was relatively stable, leading to conflicts and bloodshed. The so-called yuppies and hippies both appeared in the 1970s. Yuppies are basically middle-class people with rich families and no worries about food and clothing. They oppose any power and even use terror and violence to force the government to submit. As a result, they were severely suppressed by the US government headed by Nixon. Contrary to yuppies, hippies go to the other extreme. They also opposed the Vietnam War, because they often put flowers on the muzzle of soldiers, so they were also called "children of flowers". They also belong to the children of the middle class, emphasizing enjoying life as they please and not caring about political struggle. They are keen on rock music and drugs. At that time, there were about 40 thousand hippies in America. However, these hippies have lost their rationality and become reckless and harmful to society because of their excessive indulgence. 1969, four youths killed an actor in Hollywood. After the case was exposed, it was found that three of the murderers were female hippies. As a result, the reputation of hippies was damaged, causing disgust and hatred from all walks of life. Hippies disappeared because they didn't express their "market".