In their application to Superior Court, three media organizations argue the deceptive practice could put working journalists at risk, especially in high-stress environments, by raising suspicion about who they are.
The practice can also make it harder to win the trust of important sources and therefore get key information that is in the public interest, they say.
"This is very destructive of everything our clients do," media lawyer Philip Tunley told the court. "This chill is a real and substantial one."
The media organizations — the CBC, Canadian Journalists for Free Expression, and RTDNA Canada — want the court to declare impersonation of journalists by Ontario Provincial Police a charter violation that can't be justified.
Such a declaration, they say, would "begin to thaw the chilling effect" the practice has had on the public, sources of important news and information, and on journalists.
"A strong commitment to free expression requires nothing less," they argue in their court filings.
The organizations cite three examples — some going back more than a decade — as proof provincial police engage in posing as members of the media to gather information as part of a criminal investigation and the targets are usually aboriginals or other vulnerable groups.
In one notorious case, two officers filmed protesters at Ipperwash provincial park in 1995 and, when asked who they worked for, named the fictitious United Press Associates. Police confirmed the deception years later at a public inquiry into the fatal police shooting of an aboriginal protester.
In another case, an officer keeping an eye on protesters during an aboriginal Day of Action on Tyendinaga Mohawk territory in 2007 admitted he had pretended to be part of the media, court heard.
"These officers intentionally and factually and undoubtedly did impersonate journalists," Tunley said.
The lawyer cited affidavits from several professional journalists about how the police deception has compromised their ability to do their jobs.
In frequently testy exchanges, Justice Benjamin Glustein repeatedly challenged Tunley on whether it was fair to say these isolated examples constitute a police "practice."
For their part, provincial police say such impersonation happens rarely.
In his submissions, Crown lawyer Hart Schwartz said no evidence exists of general public awareness that police might pose as journalists, or that "mere knowledge" of the tactic would prompt them to stay away from real reporters.
Any interference with the free flow of information has to be more than trivial, Schwartz said.
After a complaint from RTDNA — the group speaks for many Canadian broadcasters — police amended an internal policy to require senior officers to provide authorization before investigators pose as working media.
The policy, Tunley said, in fact proves existence of the "covert" practice — which he said is also used by RCMP and other police services.
"They intend to continue the practice," Tunley said. "They want the authority to do it."
The hearing continues Tuesday.
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