The ineffectiveness of the jury and its impact on the black Americans are clear and the criminal justice system has made great progress in dealing with blacks in American history. Not to mention fair rights, blacks are not always given jurisdiction. In addition, over the years blacks were unable to serve the jury, apparently affecting black-and-white trials. Many improvements were achieved through various court decisions and other improvements were made through federal and state legislatures.
In the United States colonial juries often exercise invalid powers, and in the case involving freedom of maritime affairs or freedom of speech, invalidation of the jury first appeared before the American Revolutionary War. Many prosecutors in the UK gave up trials on maritime lawsuits because the conviction seems desperate as the invalidity of the jury became very general. In the pre-civil era, the jury refused to convict that it was in violation of the "fugitive slavery law". Later, during the ban, the jury often abolishes the alcohol control law, which may be only 60% of the time. Such resistance will pass the 21st revision and may aid prohibition, abolish the 18th amendment.
In the 21st century, many discussions on the invalidity of the jury are concentrated in the drug law, and some think that these laws are inequitable in principle or are considered to discriminate against certain groups . The invalid publicity organization of the jury presumes that 3-4% of all jury trials contain invalidity and the addition to the recent pending jury is based on the fact that the jury examines the effectiveness or fairness of the law itself It is considered to be indirect evidence that began to. Where the United States Supreme Court was written by the American Attorney General, John Marshall Harlan in 1895, it was judged at a ratio of 5 to 4. The judge was not responsible for speaking to the jury that the law was invalid. This decision, often cited, leads to the usual practices of US judges who punish those who tried to bring invalid assertions to the jury and if they are presented with such arguments, they are inappropriate I declared.