The United States Bill of Rights consists of the first ten amendments to the United States Constitution. These amendments limit the powers of the federal government, protecting the rights of all citizens, residents and visitors on United States territory. Among the enumerated rights these amendments guarantee are the freedom of speech, the freedom of the press, the freedom of assembly, the free exercise of religion, the freedom to petition, the people's right to keep and bear arms, and the rights to be free of unreasonable search and seizure, cruel and unusual punishment, and compelled self-incrimination. The Bill of Rights also restricts Congress's power by prohibiting it from making any law respecting establishment of religion and by prohibiting the federal government from depriving any person of life, liberty, or property without due process of law. In criminal cases, it requires indictment by grand jury for any capital or "infamous crime," guarantees a speedy public trial with an impartial and local jury, and prohibits double jeopardy. In addition, the Bill of Rights states that "the enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people," and reserves all powers not granted to the Federal government to the citizenry or States.
Source: http://en.wikipedia.org/wiki/United_States_Bill_of_Rights