"As far as I know that never happens in Canada..." which probably means it is happening all the time.

And I mean that. 

Take somebody who is highly intelligent, politically partisan, and has reason to be really angry about something important. You can't see this guy deliberately and negatively affecting patient outcomes through some innocuous procedure that is invisible for some period of time?

With 84,000 physicians in Canada, you cannot imagine a single one who might deliberately injure, or even fail to treat, a criminal? A liberal? A nazi? A curmudgeon? A homeless person?

You have two daughters and are the physician on call for the emergency ward. The police have just escorted a man in who is seriously injured, and in handcuffs. While the triage nurse is assessing him, you reasonably, you ask "what did he do?" to which an officer quietly says they are investigating a woman's brutal beating.

Does he get your best effort? Do you opt to treat somebody else? Is the man even guilty?