RAT 5:
When do the supposed/perceived rights of the individual over-ride the established rights of the many? Does not a doctor, as well as having a 'duty of care' to his patient, also have 'duty of care' to society in general. The medical oath is to save life. Do the laws of privacy over-ride one's scariness about a patient's future actions?
I can speak to the duties of a psychiatrist in the United States. First and foremost, psychiatrist are afforded more protection by law than other medical doctors or than other types of mental health practitioners.
Psychiatrists cannot disclose fantasies that a patient may have. Nor can the psychiatrist disclose past crimes the patient may have confessed. But, if the patient makes a credible threat to commit a crime then the psychiatrist is required by law to report that specific threat to law enforcement.