Excessive force by a law enforcement officers is a violation of a person's rights. Excessive force is not subject to a precise definition, but it is generally beyond the force a reasonable and prudent law enforcement officer would use under the circumstances.
Force should be used in only the minimum amount needed to achieve a legitimate purpose. Police brutality is a direct violation of the laws within the police force. The use of excessive force is also a direct violation of the Fifth and Fourteenth Amendments of the U.S Constitution regarding cruelty and protection of the laws.