What famous cases in modern times have changed a country's laws or a certain system?

1975 Louise. Zhan Sen, a beautiful young single mother living on unemployment benefits, came to work in Everys Iron Mine Company in the coldest north of Minnesota, USA. Since then, she has entered a sinister environment dominated by men, facing sexual harassment everywhere ... She and other female colleagues suffer from all kinds of shocking sexual harassment every day, such as pornographic jokes, artificial devices and rude words. Until one day in 1984, Lois decided to stand up bravely and sue those companies that were indifferent to sexual harassment. From the first filing of the complaint to the three court trials that exhausted her, the strong Lois finally won the first sexual harassment class action lawsuit in American history, which was also the most difficult sexual harassment lawsuit that lasted for 15 years, with strong evidence, the dedicated work of a visionary team of lawyers and the unity and cooperation of women workers. In the United States today, almost all companies and educational institutions have formulated strict anti-sexual harassment policies. This change is largely related to Lois's original choice and the precedent set by this case ... The Lois case is an important reason why the fertility rate in the United States can reverse the downward trend (the strengthening of religious power is also an important reason). The trial of the Lois case started from 1984, which attracted extensive media attention. During the trial of this case, many companies and educational institutions have successively formulated strict anti-sexual harassment policies. The Lois case made the United States once again put "sex" in a cage by law, and restored the fertility rate in the United States to the level of intergenerational replacement. Breeding more and more offspring will keep the United States masculine and strengthen its strategic position in the next two generations, while Europe with shrinking population will become more and more feminine and gradually degenerate into an irrelevant position. It can be said that the sexual harassment case in Lois completely changed the national destiny of the United States.