At the end of the 19th century the idea of law and order police was invented in the 19th century. There were two police in the UK in 1800. One was the Bow Street Runner invented in 1749 and the other was Thames police, only 2 years old. Then, in 1829 the Metropolitan Police Department was founded. It still exists today. Police officers were established to fulfill the functions of security guards and special police. They have to circulate the city to maintain order and stop crime.
This local law enforcement system served a small community that existed in the 19th century and brought to American colonies. The explosion of the United States and the British population was not until the end of the 18th century, it was necessary to specialize the police force.
From the late nineteenth century to the early twentieth century, domestic laws were drafted to prohibit the marriage and disinfection of obsessive-compulsive disorder to prevent the transmission of mental illness to the next generation. These laws were managed by the US Supreme Court in 1927 (Buck vs. Bell) and were not abolished until mid-20th century. In the ruling of Barker and Bell on May 2, 1927, the US Supreme Court supported the Virginia Act to provide eugenic sterilization to people considered to be genetically inappropriate. Maintaining Virginia's sterilization regulations provides a green light to similar laws in 30 states, according to which an estimated 65,000 Americans are sterilized without their consent or family.
From the mid-nineteenth century to the end of the nineteenth century in the United States, the justice system evolved using established laws, regulations, and practices. The law of Jim Crow established a way to reconcile past slavery. The country has become highly dependent on criminal justice procedures. Today, more than 6 million people are taking corrective action including imprisonment for crime such as trivial theft, drug abuse, murder. Today's "drug war" leads to imprisonment for teenagers and adults. Criminal justice experts argue that imprisonment does not change the behavior of drugs. Today, citizens and criminal justice experts are considering the benefits of the criminal justice system which does not include punitive elements for certain types of crimes.