If that were true, you could sue for failing to do so..
http://en.wikipedia.org/wiki/Warren_v._District_of_ColumbiaIn the early morning hours of Sunday, March 16, 1975, Carolyn Warren and Joan Taliaferro who shared a room on the third floor of their rooming house at 1112 Lamont Street Northwest in the District of Columbia, and Miriam Douglas shared a room on the second floor with her four-year-old daughter, were asleep. The women were awakened by the sound of the back door being broken down by two men later identified as Marvin Kent and James Morse. The men entered Douglas' second floor room, where Kent forced Douglas to sodomize him and Morse raped her.
Warren and Taliaferro, hearing Douglas' screams from the floor below. Warren telephoned the police, told the officer on duty that the house was being burglarized, and requested immediate assistance. The department employee told her to remain quiet and assured her that police assistance would be dispatched promptly.
Warren's call was received at Metropolitan Police Department Headquarters at 0623 hours, and was recorded as a burglary-in-progress. At 0626, a call was dispatched to officers on the street as a "Code 2" assignment, although calls of a crime in progress should be given priority and designated as "Code 1." Four police cruisers responded to the broadcast; three to the Lamont Street address and one to another address to investigate a possible suspect. (This suggests that when they heard that there had been a burglary, the police must have felt that they had a promising lead on a culprit.)
Meanwhile, Warren and Taliaferro crawled from their window onto an adjoining roof and waited for the police to arrive. While there, they observed one policeman drive through the alley behind their house and proceed to the front of the residence without stopping, leaning out the window, or getting out of the car to check the back entrance of the house. A second officer apparently knocked on the door in front of the residence, but left when he received no answer. The three officers departed the scene at 0633, five minutes after they arrived.
Warren and Taliaferro crawled back inside their room. They again heard Douglas' continuing screams; again called the police; told the officer that the intruders had entered the home, and requested immediate assistance. Once again, a police officer assured them that help was on the way. This second call was received at 0642 and recorded merely as "investigate the trouble;" it was never dispatched to any police officers.
Believing the police might be in the house, Warren and Taliaferro called down to Douglas, thereby alerting Kent to their presence. At knife point, Kent and Morse then forced all three women to accompany them to Kent's apartment. For the next fourteen hours the captive women were raped, robbed, beaten, forced to commit sexual acts upon one another, and made to submit to the sexual demands of Kent and Morse.
By a 4-3 decision the court decided that Warren was not entitled to remedy at the bar despite the demonstrable abuse and ineptitude on the part of the police. The court held that official police personnel and the government employing them are not generally liable to victims of criminal acts for a failure to provide adequate police protection.
http://en.wikipedia.org/wiki/DeShaney_v._Winnebago_CountyIn 1980, a divorce court in Wyoming gave custody of Joshua DeShaney, born in 1979, to his father Randy DeShaney, who moved to Winnebago County, Wisconsin. A police report of child abuse and a hospital visit in January, 1983, prompted the county Department of Social Services (DSS) to obtain a court order to keep the boy in the hospital's custody. Three days later, "On the recommendation of a "child protection team," consisting of a pediatrician, a psychologist, a police detective, the county's lawyer, several DSS caseworkers, and various hospital personnel, the juvenile court dismissed the case and returned the boy to the custody of his father."<1> The DSS entered an agreement with the boy's father, and five times throughout 1983, a DSS social worker visited the DeShaney home and recorded suspicion of child abuse and that the father was not complying with the agreement's terms. No action was taken; the DSS also took no action to remove the boy from his father's custody after a hospital reported child abuse suspicions to them in November, 1983.<2>. Visits in January and March, 1984, in which the worker was told Joshua was too ill to see her, also resulted in no action. Following the March, 1984, visit, "Randy DeShaney beat 4-year-old Joshua so severely that he fell into a life-threatening coma. Emergency brain surgery revealed a series of hemorrhages caused by traumatic injuries to the head inflicted over a long period of time. Joshua did not die, but he suffered brain damage so severe that he is expected to spend the rest of his life confined to an institution for the profoundly retarded. Randy DeShaney was subsequently tried and convicted of child abuse."<3> Randy DeShaney served less than two years in jail. He currently resides in Appleton, WI.
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The court opinion, by Chief Justice William Rehnquist, held that the Due Process Clause protects against state action only, and as it was Randy DeShaney who abused Joshua, a state actor (the Winnebago County Department of Social Services) was not responsible.
Furthermore, they ruled that the DSS could not be found liable, as a matter of constitutional law, for failure to protect Joshua DeShaney from a private actor. Although there exist conditions in which the state (or a subsidiary agency, like a county department of social services) is obligated to provide protection against private actors, and failure to do so is a violation of 14th Amendment rights, the court reasoned "The affirmative duty to protect arises not from the State's knowledge of the individual's predicament or from its expressions of intent to help him, but from the limitation which it has imposed on his freedom to act on his own behalf... it is the State's affirmative act of restraining the individual's freedom to act on his own behalf - through incarceration, institutionalization, or other similar restraint of personal liberty - which is the "deprivation of liberty" triggering the protections of the Due Process Clause, not its failure to act to protect his liberty interests against harms inflicted by other means." <5>. Since Joshua DeShaney was not in the custody of the DSS, the DSS was not required to protect him from harm. In reaching this conclusion, the court opinion relied heavily on its precedents in Estelle v. Gamble and Youngberg v. Romeo.
http://en.wikipedia.org/wiki/Castle_Rock_v._GonzalesDuring divorce proceedings, Jessica Gonzales, a resident of Castle Rock, Colorado, obtained a restraining order against her husband on June 4, 1999, requiring him to remain at least 100 yards from her and their three daughters except during specified visitation time. On June 22, at approximately 5:15 pm, her husband took possession of the three children in violation of the order. Gonzales called the police at approximately 7:30 pm, 8:30 pm, 10:10 pm, and 12:15 am on June 23, and visited the police station in person at 12:40 am on June 23, 1999. However, the police took no action, despite the husband's having called Gonzales prior to her second call to the police and informing her that he had the children with him at an amusement park in Denver, Colorado. At approximately 3:20 am on June 23, 1999, the husband appeared at the Castle Rock police station and instigated a fatal shoot-out with the police. A search of his vehicle revealed the corpses of the three daughters, whom the husband had killed prior to his arrival.
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The Supreme Court reversed the Tenth Circuit's decision, reinstating the District Court's order of dismissal. The Court's majority opinion by Justice Antonin Scalia held that enforcement of the restraining order was not mandatory under Colorado law (thus making this a technically narrow ruling); were a mandate for enforcement to exist (making Scalia's statements afterward technically obiter dicta), it would not create an individual right to enforcement that could be considered a protected entitlement under the precedent of Board of Regents of State Colleges v. Roth; and even if there were a protected individual entitlement to enforcement of a restraining order, such entitlement would have no monetary value and hence would not count as property for the Due Process Clause.
Justice David Souter wrote a concurring opinion, using the reasoning that enforcement of a restraining order is a process, not the interest protected by the process, and that there is not due process protection for processes.