The fourteenth amendment of the United States Constitution is important because it expands the definition who is a citizen of the Unites States. Prior to its passage, blacks, women, and many other minority groups were not considered citizens. Now, that the minority groups are considered citizens they are protected by law. If you were born or neutralized in the Us you have a right to a fair trial.
The fourteenth amendment applies to the criminal justice because of these few cases, Brown vs. the Board of Education, Dred Scott vs. Sanford, and the Civil Rights Act of 1866. These are cases that had to do with the fourteenth amendment. The Brown Vs. Board of Education case of the declared state laws establishing separate public schools for black and white students unconstitutional. The decision overturned the Plessey vs. Ferguson decision of 1896 which allowed state-sponsored segregation. The Dred Scott vs. Sanford stated was a ruling that that the ruling by the U.S Supreme court that people of African descent brought into the United States and held as slaves were not protected by the Constitution and could never be U.S. citizens. And last not be least the Civil Rights Act 1866 Formally titled An Act to protect all Persons in the United States in their Civil Rights, and furnish the Means of their vindication, the Act declared that people born in the United States and not subject to any foreign power are entitled to be citizens, without regard to race, color, or previous condition of slavery or involuntary servitude.