On Monday, Canada began checking all airline passengers who appear to be over the age of twelve against a "Specified Persons List" — which is a euphemism for a no-fly list. From Canada's Passenger Protect:  

The Specified Persons List includes the name, date of birth and gender of individuals who may pose an immediate threat to aviation security, should they board a flight. 

Reuters reports that the list "was compiled using information from the Royal Canadian Mounted Police as well as Canada's counter-intelligence agency." CTV reports that there are between 500-2000 people on the list and that criteria for winding up on the list includes:

"a person who is or has been involved in a terrorist group, a person who has been convicted of life-threatening crimes against aviation or a person who has been convicted of one or more serious offences [sic] who may attack an air carrier."

Civil rights groups throughout Canada are up in arms, citing potential abuse.