Both the United States Constitution and the Supreme Court create legal definitions of what police can and cannot do. While the Constitution, including amendments beginning with the Bill of Rights (a name referring to the first 10 amendments collectively), creates the law of the United States, the Supreme Court functions to interpret the Constitution, especially in those cases where nothing is explicitly said about a specific issue in the Constitution. This becomes increasingly important as new technologies evolve such as mobile phones, surveillance cameras, and social media that did not exist when the Constitution was written.
Three amendments to the Constitution are specifically relevant to policing.
Amendment 4: The right of the people to be secure in their persons, houses,...
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